diff --git a/app/assets/javascripts/milestone_select.js b/app/assets/javascripts/milestone_select.js
index 7e9a50a885d34b873da69702d83a40c946a7f11b..f8b3d3061f05fcedfa0d260e3e2a10569b3acbc0 100644
--- a/app/assets/javascripts/milestone_select.js
+++ b/app/assets/javascripts/milestone_select.js
@@ -12,7 +12,8 @@ import ModalStore from './boards/stores/modal_store';
 export default class MilestoneSelect {
   constructor(currentProject, els, options = {}) {
     if (currentProject !== null) {
-      this.currentProject = typeof currentProject === 'string' ? JSON.parse(currentProject) : currentProject;
+      this.currentProject =
+        typeof currentProject === 'string' ? JSON.parse(currentProject) : currentProject;
     }
 
     this.init(els, options);
@@ -26,7 +27,10 @@ export default class MilestoneSelect {
     }
 
     $els.each((i, dropdown) => {
-      let milestoneLinkNoneTemplate, milestoneLinkTemplate, selectedMilestone, selectedMilestoneDefault;
+      let milestoneLinkNoneTemplate,
+        milestoneLinkTemplate,
+        selectedMilestone,
+        selectedMilestoneDefault;
       const $dropdown = $(dropdown);
       const projectId = $dropdown.data('projectId');
       const milestonesUrl = $dropdown.data('milestones');
@@ -46,45 +50,47 @@ export default class MilestoneSelect {
       const $sidebarCollapsedValue = $block.find('.sidebar-collapsed-icon');
       const $value = $block.find('.value');
       const $loading = $block.find('.block-loading').fadeOut();
-      selectedMilestoneDefault = (showAny ? '' : null);
-      selectedMilestoneDefault = (showNo && defaultNo ? 'No Milestone' : selectedMilestoneDefault);
+      selectedMilestoneDefault = showAny ? '' : null;
+      selectedMilestoneDefault = showNo && defaultNo ? 'No Milestone' : selectedMilestoneDefault;
       selectedMilestone = $dropdown.data('selected') || selectedMilestoneDefault;
 
       if (issueUpdateURL) {
-        milestoneLinkTemplate = _.template('<a href="/<%- full_path %>/milestones/<%- iid %>" class="bold has-tooltip" data-container="body" title="<%- remaining %>"><%- title %></a>');
+        milestoneLinkTemplate = _.template(
+          '<a href="/<%- full_path %>/milestones/<%- iid %>" class="bold has-tooltip" data-container="body" title="<%- remaining %>"><%- title %></a>',
+        );
         milestoneLinkNoneTemplate = '<span class="no-value">None</span>';
       }
       return $dropdown.glDropdown({
         showMenuAbove: showMenuAbove,
-        data: (term, callback) => axios.get(milestonesUrl)
-          .then(({ data }) => {
+        data: (term, callback) =>
+          axios.get(milestonesUrl).then(({ data }) => {
             const extraOptions = [];
             if (showAny) {
               extraOptions.push({
-                id: 0,
-                name: '',
-                title: 'Any Milestone'
+                id: null,
+                name: null,
+                title: 'Any Milestone',
               });
             }
             if (showNo) {
               extraOptions.push({
                 id: -1,
                 name: 'No Milestone',
-                title: 'No Milestone'
+                title: 'No Milestone',
               });
             }
             if (showUpcoming) {
               extraOptions.push({
                 id: -2,
                 name: '#upcoming',
-                title: 'Upcoming'
+                title: 'Upcoming',
               });
             }
             if (showStarted) {
               extraOptions.push({
                 id: -3,
                 name: '#started',
-                title: 'Started'
+                title: 'Started',
               });
             }
             if (extraOptions.length) {
@@ -106,7 +112,7 @@ export default class MilestoneSelect {
         `,
         filterable: true,
         search: {
-          fields: ['title']
+          fields: ['title'],
         },
         selectable: true,
         toggleLabel: (selected, el, e) => {
@@ -119,7 +125,7 @@ export default class MilestoneSelect {
         defaultLabel: defaultLabel,
         fieldName: $dropdown.data('fieldName'),
         text: milestone => _.escape(milestone.title),
-        id: (milestone) => {
+        id: milestone => {
           if (!useId && !$dropdown.is('.js-issuable-form-dropdown')) {
             return milestone.name;
           } else {
@@ -131,7 +137,7 @@ export default class MilestoneSelect {
           // display:block overrides the hide-collapse rule
           return $value.css('display', '');
         },
-        opened: (e) => {
+        opened: e => {
           const $el = $(e.currentTarget);
           if ($dropdown.hasClass('js-issue-board-sidebar') || options.handleClick) {
             selectedMilestone = $dropdown[0].dataset.selected || selectedMilestoneDefault;
@@ -140,7 +146,7 @@ export default class MilestoneSelect {
           $(`[data-milestone-id="${_.escape(selectedMilestone)}"] > a`, $el).addClass('is-active');
         },
         vue: $dropdown.hasClass('js-issue-board-sidebar'),
-        clicked: (clickEvent) => {
+        clicked: clickEvent => {
           const { $el, e } = clickEvent;
           let selected = clickEvent.selectedObj;
 
@@ -155,11 +161,14 @@ export default class MilestoneSelect {
 
           const page = $('body').attr('data-page');
           const isIssueIndex = page === 'projects:issues:index';
-          const isMRIndex = (page === page && page === 'projects:merge_requests:index');
-          const isSelecting = (selected.name !== selectedMilestone);
+          const isMRIndex = page === page && page === 'projects:merge_requests:index';
+          const isSelecting = selected.name !== selectedMilestone;
           selectedMilestone = isSelecting ? selected.name : selectedMilestoneDefault;
 
-          if ($dropdown.hasClass('js-filter-bulk-update') || $dropdown.hasClass('js-issuable-form-dropdown')) {
+          if (
+            $dropdown.hasClass('js-filter-bulk-update') ||
+            $dropdown.hasClass('js-issuable-form-dropdown')
+          ) {
             e.preventDefault();
             return;
           }
@@ -177,10 +186,13 @@ export default class MilestoneSelect {
             return $dropdown.closest('form').submit();
           } else if ($dropdown.hasClass('js-issue-board-sidebar')) {
             if (selected.id !== -1 && isSelecting) {
-              gl.issueBoards.boardStoreIssueSet('milestone', new ListMilestone({
-                id: selected.id,
-                title: selected.name
-              }));
+              gl.issueBoards.boardStoreIssueSet(
+                'milestone',
+                new ListMilestone({
+                  id: selected.id,
+                  title: selected.name,
+                }),
+              );
             } else {
               gl.issueBoards.boardStoreIssueDelete('milestone');
             }
@@ -188,7 +200,8 @@ export default class MilestoneSelect {
             $dropdown.trigger('loading.gl.dropdown');
             $loading.removeClass('hidden').fadeIn();
 
-            gl.issueBoards.BoardsStore.detail.issue.update($dropdown.attr('data-issue-update'))
+            gl.issueBoards.BoardsStore.detail.issue
+              .update($dropdown.attr('data-issue-update'))
               .then(() => {
                 $dropdown.trigger('loaded.gl.dropdown');
                 $loading.fadeOut();
@@ -203,7 +216,8 @@ export default class MilestoneSelect {
             data[abilityName].milestone_id = selected != null ? selected : null;
             $loading.removeClass('hidden').fadeIn();
             $dropdown.trigger('loading.gl.dropdown');
-            return axios.put(issueUpdateURL, data)
+            return axios
+              .put(issueUpdateURL, data)
               .then(({ data }) => {
                 $dropdown.trigger('loaded.gl.dropdown');
                 $loading.fadeOut();
@@ -215,7 +229,10 @@ export default class MilestoneSelect {
                   data.milestone.name = data.milestone.title;
                   $value.html(milestoneLinkTemplate(data.milestone));
                   return $sidebarCollapsedValue
-                    .attr('data-original-title', `${data.milestone.name}<br />${data.milestone.remaining}`)
+                    .attr(
+                      'data-original-title',
+                      `${data.milestone.name}<br />${data.milestone.remaining}`,
+                    )
                     .find('span')
                     .text(data.milestone.title);
                 } else {
@@ -230,7 +247,7 @@ export default class MilestoneSelect {
                 $loading.fadeOut();
               });
           }
-        }
+        },
       });
     });
   }
diff --git a/changelogs/unreleased/winh-dashboard-any-milestone.yml b/changelogs/unreleased/winh-dashboard-any-milestone.yml
new file mode 100644
index 0000000000000000000000000000000000000000..49eecd3da2b5930a35c871d2bfeac3c60ddb09f5
--- /dev/null
+++ b/changelogs/unreleased/winh-dashboard-any-milestone.yml
@@ -0,0 +1,5 @@
+---
+title: Reset milestone filter when clicking "Any Milestone" in dashboard
+merge_request: 18531
+author:
+type: fixed
diff --git a/spec/features/dashboard/milestone_filter_spec.rb b/spec/features/dashboard/milestone_filter_spec.rb
index c965b565ca3f1dabf3223bdc9d44fa042341a79e..8cd57f4f32754a3526d17cf0d26c14ddc010f77d 100644
--- a/spec/features/dashboard/milestone_filter_spec.rb
+++ b/spec/features/dashboard/milestone_filter_spec.rb
@@ -10,13 +10,16 @@ feature 'Dashboard > milestone filter', :js do
   let!(:issue) { create :issue, author: user, project: project, milestone: milestone }
   let!(:issue2) { create :issue, author: user, project: project, milestone: milestone2 }
 
+  dropdown_toggle_button = '.js-milestone-select'
+
   before do
     sign_in(user)
-    visit issues_dashboard_path(author_id: user.id)
   end
 
   context 'default state' do
     it 'shows issues with Any Milestone' do
+      visit issues_dashboard_path(author_id: user.id)
+
       page.all('.issue-info').each do |issue_info|
         expect(issue_info.text).to match(/v\d.0/)
       end
@@ -24,31 +27,51 @@ feature 'Dashboard > milestone filter', :js do
   end
 
   context 'filtering by milestone' do
-    milestone_select_selector = '.js-milestone-select'
-
     before do
-      filter_item_select('v1.0', milestone_select_selector)
-      find(milestone_select_selector).click
+      visit issues_dashboard_path(author_id: user.id)
+      filter_item_select('v1.0', dropdown_toggle_button)
+      find(dropdown_toggle_button).click
       wait_for_requests
     end
 
     it 'shows issues with Milestone v1.0' do
       expect(find('.issues-list')).to have_selector('.issue', count: 1)
-      expect(find('.dropdown-content')).to have_selector('a.is-active', count: 1)
+      expect(find('.milestone-filter .dropdown-content')).to have_selector('a.is-active', count: 1)
     end
 
     it 'should not change active Milestone unless clicked' do
-      expect(find('.dropdown-content')).to have_selector('a.is-active', count: 1)
+      page.within '.milestone-filter' do
+        expect(find('.dropdown-content')).to have_selector('a.is-active', count: 1)
+
+        find('.dropdown-menu-close').click
 
-      # open & close dropdown
-      find('.dropdown-menu-close').click
+        expect(page).not_to have_selector('.dropdown.open')
+
+        find(dropdown_toggle_button).click
+
+        expect(find('.dropdown-content')).to have_selector('a.is-active', count: 1)
+        expect(find('.dropdown-content a.is-active')).to have_content('v1.0')
+      end
+    end
+  end
+
+  context 'with milestone filter in URL' do
+    before do
+      visit issues_dashboard_path(author_id: user.id, milestone_title: milestone.title)
+      find(dropdown_toggle_button).click
+      wait_for_requests
+    end
+
+    it 'has milestone selected' do
+      expect(find('.milestone-filter .dropdown-content')).to have_css('.is-active', text: milestone.title)
+    end
 
-      expect(find('.milestone-filter')).not_to have_selector('.dropdown.open')
+    it 'removes milestone filter from URL after clicking "Any Milestone"' do
+      expect(current_url).to include("milestone_title=#{milestone.title}")
 
-      find(milestone_select_selector).click
+      find('.milestone-filter .dropdown-content li', text: 'Any Milestone').click
 
-      expect(find('.dropdown-content')).to have_selector('a.is-active', count: 1)
-      expect(find('.dropdown-content a.is-active')).to have_content('v1.0')
+      expect(current_url).not_to include('milestone_title')
     end
   end
 end