Initial size is set to infinity!! Fixes #55461

src/vs/workbench/browser/parts/views/viewsViewlet.ts

@@ -377,9 +377,8 @@ export abstract class ViewContainerViewlet extends PanelViewlet implements IView
 	private computeInitialSizes(): { [id: string]: number } {
 		let sizes = {};
 		if (this.dimension) {
-			let totalWeight = 0;
 			for (const viewDescriptor of this.viewsModel.visibleViewDescriptors) {
-				sizes[viewDescriptor.id] = this.dimension.height * (viewDescriptor.weight || 20) / totalWeight;
+				sizes[viewDescriptor.id] = this.dimension.height * (viewDescriptor.weight || 20) / 100;
 			}
 		}
 		return sizes;

src/vs/workbench/parts/extensions/electron-browser/extensionsViewlet.ts

@@ -132,7 +132,7 @@ export class ExtensionsViewletViewsContribution implements IWorkbenchContributio
 			container: VIEW_CONTAINER,
 			ctor: EnabledExtensionsView,
 			when: ContextKeyExpr.not('searchExtensions'),
-			weight: 30,
+			weight: 40,
 			canToggleVisibility: true,
 			order: 1
 		};
@@ -181,7 +181,7 @@ export class ExtensionsViewletViewsContribution implements IWorkbenchContributio
 			container: VIEW_CONTAINER,
 			ctor: DefaultRecommendedExtensionsView,
 			when: ContextKeyExpr.and(ContextKeyExpr.not('searchExtensions'), ContextKeyExpr.has('defaultRecommendedExtensions')),
-			weight: 70,
+			weight: 60,
 			order: 2,
 			canToggleVisibility: true
 		};