release: publish v2.0.19 sidebar interaction fixes

Restore the shared sliding-selection transition after React StrictMode effect restarts, disable redundant service filters, add regression coverage, and update the public English changelog and package metadata for v2.0.19.

CHANGELOG.md

@@ -2,6 +2,18 @@
 
 All notable changes to Multi-Debrid Downloader are documented in this file.
 
+## [2.0.19] - 2026-08-11
+
+### Interface fixes
+
+- Restored smooth sidebar selection movement in development builds when React StrictMode restarts layout effects.
+- Kept the active sidebar entry visible immediately while the shared selection marker moves to its new position.
+- Disabled the service filter when fewer than two concrete services are available, preventing an empty or redundant dropdown from opening.
+
+### Reliability and testing
+
+- Added regression coverage for StrictMode transition initialization and service-filter availability states.
+
 ## [2.0.18] - 2026-08-11
 
 ### Downloads and status handling

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "real-debrid-downloader",
-  "version": "2.0.18",
+  "version": "2.0.19",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "real-debrid-downloader",
-      "version": "2.0.18",
+      "version": "2.0.19",
       "license": "MIT",
       "dependencies": {
         "adm-zip": "0.6.0",

package.json

@@ -1,6 +1,6 @@
 {
   "name": "real-debrid-downloader",
-  "version": "2.0.18",
+  "version": "2.0.19",
   "description": "Desktop downloader",
   "main": "build/main/main/main.js",
   "author": "Sucukdeluxe",

src/renderer/ui/SlidingSelection.tsx

@@ -25,9 +25,22 @@ export function scheduleSelectionLayout(
   return requestFrame(apply);
 }
 
+export function scheduleSelectionTransitions(
+  enabled: boolean,
+  frame: number,
+  enable: () => void,
+  requestFrame: (callback: FrameRequestCallback) => number = requestAnimationFrame,
+  cancelFrame: (frame: number) => void = cancelAnimationFrame
+): number {
+  if (enabled) return frame;
+  if (frame) cancelFrame(frame);
+  return requestFrame(enable);
+}
+
 export function SlidingSelection({ activeKey, as = "div", axis, children, className = "", ...attributes }: SlidingSelectionProps): ReactElement {
   const ref = useRef<HTMLElement>(null);
   const hasPositionRef = useRef(false);
+  const transitionsEnabledRef = useRef(false);
 
   useSelectionLayoutEffect(() => {
     const element = ref.current;
@@ -50,11 +63,12 @@ export function SlidingSelection({ activeKey, as = "div", axis, children, classN
       hasPositionRef.current = true;
     };
     const sync = (): void => {
-      if (!hasPositionRef.current) {
+      if (!hasPositionRef.current || !transitionsEnabledRef.current) {
-        transitionFrame = scheduleSelectionLayout(false, transitionFrame, applyLayout, requestAnimationFrame, cancelAnimationFrame, () => {
+        applyLayout();
-          if (hasPositionRef.current) {
+        transitionFrame = scheduleSelectionTransitions(transitionsEnabledRef.current, transitionFrame, () => {
+          if (!hasPositionRef.current) return;
+          transitionsEnabledRef.current = true;
           element.style.setProperty("--ui-sliding-selection-duration", "420ms");
-          }
         });
         return;
       }

src/renderer/views/downloads/DownloadsView.tsx

@@ -88,7 +88,7 @@ export function DownloadsSidebar({ actions, model }: { actions: DownloadsViewAct
       <SlidingSelection activeKey={model.filter} aria-label="Downloadfilter" as="nav" axis="vertical">
         {filters.map((filter) => <button className={model.filter === filter.id ? "is-active" : ""} data-sliding-selection-active={model.filter === filter.id} data-sliding-selection-item="true" key={filter.id} onClick={() => actions.onFilterChange(filter.id)} type="button"><span>{filter.label}</span><b>{model.counts[filter.id]}</b></button>)}
       </SlidingSelection>
-      <label className="downloads-provider-filter"><span>Service</span><select aria-label="Service filtern" onChange={(event) => actions.onProviderFilterChange(event.target.value)} value={model.providerFilter}><option value="all">Alle Services</option>{model.providerOptions.map((provider) => <option key={provider.id} value={provider.id}>{provider.label}</option>)}</select></label>
+      <label className="downloads-provider-filter"><span>Service</span><select aria-label="Service filtern" disabled={model.providerOptions.length <= 1} onChange={(event) => actions.onProviderFilterChange(event.target.value)} value={model.providerFilter}><option value="all">Alle Services</option>{model.providerOptions.map((provider) => <option key={provider.id} value={provider.id}>{provider.label}</option>)}</select></label>
       <label className="downloads-sidebar-search"><span>Downloads durchsuchen</span><input className="downloads-search-input" onChange={(event) => actions.onQueryChange(event.target.value)} placeholder="Paket, Datei oder Service" type="search" value={model.query} /></label>
       <div className="downloads-sidebar-actions">
         <button onClick={actions.onToggleAllPackages} type="button">Alle ein-/ausklappen</button>

tests/downloads-view.test.tsx

@@ -486,6 +486,16 @@ describe("downloads view", () => {
     expect(html.match(/data-sliding-selection-active="true"/g)).toHaveLength(1);
   });
 
+  it("disables the service filter until more than one concrete service is available", () => {
+    const none = renderToStaticMarkup(<DownloadsSidebar actions={createActions()} model={withRuntime(createInput(), { providerOptions: [] })} />);
+    const one = renderToStaticMarkup(<DownloadsSidebar actions={createActions()} model={withRuntime(createInput(), { providerOptions: [{ id: "rapidgator", label: "RapidGator" }] })} />);
+    const multiple = renderToStaticMarkup(<DownloadsSidebar actions={createActions()} model={withRuntime(createInput(), { providerOptions: [{ id: "rapidgator", label: "RapidGator" }, { id: "ddownload", label: "DDownload" }] })} />);
+
+    expect(none).toMatch(/<select[^>]*aria-label="Service filtern"[^>]*disabled=""/);
+    expect(one).toMatch(/<select[^>]*aria-label="Service filtern"[^>]*disabled=""/);
+    expect(multiple).not.toMatch(/<select[^>]*aria-label="Service filtern"[^>]*disabled=""/);
+  });
+
   it("shows only the package mode while the file mode remains hidden", () => {
     const html = renderToStaticMarkup(<DownloadsSidebar actions={createActions()} model={withRuntime(createInput())} />);
     const css = fs.readFileSync(path.join(process.cwd(), "src/renderer/views/downloads/downloads.css"), "utf8");

tests/sliding-selection.test.ts

@@ -1,6 +1,34 @@
 import { describe, expect, it } from "vitest";
 
 describe("sliding selection scheduling", () => {
+  it("re-arms transitions when a StrictMode effect cleanup cancels the first frame", async () => {
+    const selectionModule = await import("../src/renderer/ui/SlidingSelection");
+    const schedule = Reflect.get(selectionModule, "scheduleSelectionTransitions");
+
+    expect(schedule).toBeTypeOf("function");
+
+    let transitionsEnabled = false;
+    let nextFrame = 0;
+    const pending = new Map<number, FrameRequestCallback>();
+    const requestFrame = (callback: FrameRequestCallback): number => {
+      nextFrame += 1;
+      pending.set(nextFrame, callback);
+      return nextFrame;
+    };
+    const cancelFrame = (frame: number): void => {
+      pending.delete(frame);
+    };
+
+    const firstFrame = schedule(false, 0, () => { transitionsEnabled = true; }, requestFrame, cancelFrame);
+    cancelFrame(firstFrame);
+    const secondFrame = schedule(false, 0, () => { transitionsEnabled = true; }, requestFrame, cancelFrame);
+
+    expect(transitionsEnabled).toBe(false);
+    expect(pending.has(firstFrame)).toBe(false);
+    pending.get(secondFrame)?.(0);
+    expect(transitionsEnabled).toBe(true);
+  });
+
   it("applies the first mounted selection before scheduling later movements", async () => {
     const selectionModule = await import("../src/renderer/ui/SlidingSelection");
     const schedule = Reflect.get(selectionModule, "scheduleSelectionLayout");