diff --git a/arduino-ide-extension/src/browser/components/component-list/filterable-list-container.tsx b/arduino-ide-extension/src/browser/components/component-list/filterable-list-container.tsx
index bb7ea3aa..1211720f 100644
--- a/arduino-ide-extension/src/browser/components/component-list/filterable-list-container.tsx
+++ b/arduino-ide-extension/src/browser/components/component-list/filterable-list-container.tsx
@@ -5,6 +5,7 @@ import { Searchable } from '../../../common/protocol/searchable';
 import { Installable } from '../../../common/protocol/installable';
 import { InstallationProgressDialog } from '../installation-progress-dialog';
 import { SearchBar } from './search-bar';
+import { ListWidget } from './list-widget';
 import { ComponentList } from './component-list';
 import { ListItemRenderer } from './list-item-renderer';
 
@@ -25,6 +26,7 @@ export class FilterableListContainer<T> extends React.Component<FilterableListCo
     }
 
     render(): React.ReactNode {
+        this.props.container.update(); // This will recalculate the desired dimension of the scroll-bar thumb. (See: arduino/arduino-pro-ide#101)
         return <div className={'filterable-list-container'}>
             {this.renderSearchFilter()}
             {this.renderSearchBar()}
@@ -93,6 +95,7 @@ export class FilterableListContainer<T> extends React.Component<FilterableListCo
 export namespace FilterableListContainer {
 
     export interface Props<T> {
+        readonly container: ListWidget<T>;
         readonly installable: Installable<T>;
         readonly searchable: Searchable<T>;
         readonly itemLabel: (item: T) => string;
diff --git a/arduino-ide-extension/src/browser/components/component-list/list-widget.tsx b/arduino-ide-extension/src/browser/components/component-list/list-widget.tsx
index 376c4de2..adeecb04 100644
--- a/arduino-ide-extension/src/browser/components/component-list/list-widget.tsx
+++ b/arduino-ide-extension/src/browser/components/component-list/list-widget.tsx
@@ -61,6 +61,7 @@ export abstract class ListWidget<T> extends ReactWidget {
 
     render(): React.ReactNode {
         return <FilterableListContainer<T>
+            container={this}
             resolveContainer={this.deferredContainer.resolve}
             resolveFocus={this.onFocusResolved}
             searchable={this.options.searchable}