Avoid doubled and unnecessary scrollbars. For some reason, the left part of the partitioned space gets to wide. To avoid this, we prevent an overflow on the boards page.

frontend/src/app/modules/boards/board/board-partitioned-page/board-list-container.component.sass

@@ -11,6 +11,7 @@ $board-list-max-width: 300px
 
   // Make it scrollable
   overflow-y: auto
+  @include styled-scroll-bar
 
 .boards-list-item-handle
   position: absolute
@@ -36,11 +37,13 @@ $board-list-max-width: 300px
   // Same height as board list header
   height: 42px
   line-height: 42px
-  margin: 5px 0 0 15px
   font-size: 14px
   cursor: pointer
   color: var(--gray-dark)
 
+  .boards-list--add-item-text
+    padding: 5px 15px 0 15px
+
   .boards-list--container.-free &
     margin-top: 0
 

frontend/src/app/modules/boards/board/board-partitioned-page/board-partitioned-page.component.sass

@@ -0,0 +1,2 @@
+.work-packages-partitioned-page--content-left
+  overflow: hidden

frontend/src/app/modules/boards/board/board-partitioned-page/board-partitioned-page.component.ts

@@ -33,7 +33,8 @@ export function boardCardViewHandlerFactory(injector:Injector) {
 @Component({
   templateUrl: '/app/modules/work_packages/routing/partitioned-query-space-page/partitioned-query-space-page.component.html',
   styleUrls: [
-    '/app/modules/work_packages/routing/partitioned-query-space-page/partitioned-query-space-page.component.sass'
+    '/app/modules/work_packages/routing/partitioned-query-space-page/partitioned-query-space-page.component.sass',
+    './board-partitioned-page.component.sass'
   ],
   changeDetection: ChangeDetectionStrategy.OnPush,
   providers: [