Fix #68315

src/vs/base/parts/tree/browser/treeDefaults.ts

@@ -553,7 +553,7 @@ export class DefaultTreestyler implements _.ITreeStyler {
 export class CollapseAllAction extends Action {
 
 	constructor(private viewer: _.ITree, enabled: boolean) {
-		super('vs.tree.collapse', nls.localize('collapse', "Collapse"), 'monaco-tree-action collapse-all', enabled);
+		super('vs.tree.collapse', nls.localize('collapse all', "Collapse All"), 'monaco-tree-action collapse-all', enabled);
 	}
 
 	public run(context?: any): Promise<any> {

src/vs/workbench/contrib/markers/electron-browser/markersPanel.ts

@@ -402,7 +402,7 @@ export class MarkersPanel extends Panel implements IMarkerFilterController {
 	}
 
 	private createActions(): void {
-		this.collapseAllAction = new Action('vs.tree.collapse', localize('collapse', "Collapse"), 'monaco-tree-action collapse-all', true, async () => {
+		this.collapseAllAction = new Action('vs.tree.collapse', localize('collapseAll', "Collapse All"), 'monaco-tree-action collapse-all', true, async () => {
 			this.tree.collapseAll();
 			this.tree.setSelection([]);
 			this.tree.setFocus([]);