Fix: hide slim sidebar scrollbar in browsers with stupid scrollbars (#13837)

src-ui/src/app/components/app-frame/app-frame.component.scss

@@ -109,6 +109,15 @@ main {
 }
 
 @media(min-width: 768px) {
+  // hide scrollbars on browsers that take up layout width
+  .pngx-classic-scrollbars .sidebar.slim {
+    scrollbar-width: none;
+
+    &::-webkit-scrollbar {
+      display: none;
+    }
+  }
+
   .sidebar.slim {
     max-width: 55px;
 
@@ -125,6 +134,19 @@ main {
     .sidebar-heading span {
       display: none;
     }
+
+    .nav-link,
+    .nav-anchor {
+      display: flex;
+      align-items: center;
+      justify-content: center;
+      padding-left: 0;
+      padding-right: 0;
+
+      i-bs {
+        margin-right: 0 !important;
+      }
+    }
   }
 
   .sidebar.slim:not(.animating) ~ main.col-slim {

src-ui/src/app/components/app-frame/app-frame.component.spec.ts

@@ -543,6 +543,27 @@ describe('AppFrameComponent', () => {
     )
   })
 
+  it('should only flag scrollbars that take up layout width', () => {
+    const offsetWidth = jest.spyOn(HTMLElement.prototype, 'offsetWidth', 'get')
+    jest.spyOn(HTMLElement.prototype, 'clientWidth', 'get').mockReturnValue(100)
+
+    offsetWidth.mockReturnValue(115)
+    component['detectClassicScrollbars']()
+    expect(
+      window.document.documentElement.classList.contains(
+        'pngx-classic-scrollbars'
+      )
+    ).toBeTruthy()
+
+    offsetWidth.mockReturnValue(100)
+    component['detectClassicScrollbars']()
+    expect(
+      window.document.documentElement.classList.contains(
+        'pngx-classic-scrollbars'
+      )
+    ).toBeFalsy()
+  })
+
   it('should collapse attributes sections when enabling slim sidebar', () => {
     jest.spyOn(settingsService, 'storeSettings').mockReturnValue(of(true))
     settingsService.set(SETTINGS_KEYS.ATTRIBUTES_SECTIONS_COLLAPSED, [])

src-ui/src/app/components/app-frame/app-frame.component.ts

@@ -118,6 +118,7 @@ export class AppFrameComponent
 
   ngOnInit(): void {
     this.lastScrollY = window.scrollY
+    this.detectClassicScrollbars()
 
     if (this.settingsService.get(SETTINGS_KEYS.UPDATE_CHECKING_ENABLED)) {
       this.checkForUpdates()
@@ -343,6 +344,22 @@ export class AppFrameComponent
     this.lastScrollY = currentScrollY
   }
 
+  /**
+   * Flag for browsers whose scrollbars take up layout width. Remove me
+   * some day, I hope.
+   */
+  private detectClassicScrollbars(): void {
+    const probe = document.createElement('div')
+    probe.style.cssText =
+      'position:absolute;top:-9999px;width:100px;height:100px;overflow:scroll'
+    document.body.appendChild(probe)
+    document.documentElement.classList.toggle(
+      'pngx-classic-scrollbars',
+      probe.offsetWidth > probe.clientWidth
+    )
+    probe.remove()
+  }
+
   private isMobileViewport(): boolean {
     return window.innerWidth < 768
   }