src/static/css/style.css

@@ -2133,12 +2133,19 @@ a.dev-source-pill:hover {
     font-size: 12px; color: var(--accent); font-weight: 600;
 }
 
-/* === Blur for First Refresh === */
-.tab-panels.blurred .tab-panel {
+/* === Blur for First Refresh ===
+ * Liegt auf #incident-view, damit Header (Titel/Aktionen/Beschreibung) und
+ * Tab-Panels gemeinsam unscharf werden. will-change + translateZ erzwingen
+ * einen persistenten GPU-Composite-Layer, sodass der Effekt bei Window-Resize
+ * und Reflow nicht zerschossen wird. Keine Transition: Blur soll schlagartig
+ * kommen und schlagartig gehen, sonst sieht man waehrend des Reflows einen
+ * lesbaren Zwischenzustand. */
+#incident-view.refresh-blurred {
     filter: blur(8px);
     pointer-events: none;
     user-select: none;
-    transition: filter 0.4s ease;
+    will-change: filter;
+    transform: translateZ(0);
 }
 
 /* === Disabled Actions During First Refresh === */
@@ -4035,7 +4042,6 @@ a.dev-source-pill:hover {
 .tab-panel .ht-timeline-container {
     min-height: 200px;
 }
-.tab-panels.blurred { filter: blur(4px); pointer-events: none; }
 
 .grid-stack .card-header:active {
     cursor: grabbing;

src/static/js/app.js

@@ -735,12 +735,12 @@ const App = {
         if (prevOverlay) prevOverlay.style.display = 'none';
         const prevMini = document.getElementById('progress-mini');
         if (prevMini) prevMini.style.display = 'none';
-        const grid = document.querySelector('.tab-panels');
+        const blurTarget = document.getElementById('incident-view');
         // Wenn gerade ein erster Refresh laeuft, Blur stehen lassen statt
         // remove+add im selben Tick — CSS filter:blur greift sonst nicht.
         const _restState = isRefreshing ? UI._progressState[id] : null;
         const _willReBlur = _restState && _restState.isFirst && !_restState.minimized;
-        if (grid && !_willReBlur) grid.classList.remove('blurred');
+        if (blurTarget && !_willReBlur) blurTarget.classList.remove('refresh-blurred');
 
         if (isRefreshing) {
             const state = UI._progressState[id];

src/static/js/components.js

@@ -334,16 +334,16 @@ const UI = {
         // Blocking (no close) for first refresh
         if (state.isFirst) {
             overlay.classList.add('blocking');
-            // Apply blur to grid
-            const grid = document.querySelector('.tab-panels');
-            if (grid) {
-                grid.classList.add('blurred');
+            // Apply blur to incident-view (Header + Tab-Panels gemeinsam).
+            const blurTarget = document.getElementById('incident-view');
+            if (blurTarget) {
+                blurTarget.classList.add('refresh-blurred');
                 // Sicherheitsnetz: bei viel DOM-Reshuffle im selben Tick
                 // (Display-Wechsel, renderSidebar, leere innerHTML) greift
                 // CSS filter:blur erst beim naechsten Layout-Pass. Im
                 // naechsten Frame nochmal setzen — idempotent.
                 requestAnimationFrame(() => {
-                    if (state && state.isFirst) grid.classList.add('blurred');
+                    if (state && state.isFirst) blurTarget.classList.add('refresh-blurred');
                 });
             }
         } else {
@@ -474,8 +474,8 @@ const UI = {
 
         if (incidentId === App.currentIncidentId) {
             // Remove blur
-            const grid = document.querySelector('.tab-panels');
-            if (grid) grid.classList.remove('blurred');
+            const blurTarget = document.getElementById('incident-view');
+            if (blurTarget) blurTarget.classList.remove('refresh-blurred');
 
             const overlay = document.getElementById('progress-overlay');
             if (overlay) {
@@ -568,8 +568,8 @@ const UI = {
         if (!incidentId) incidentId = App.currentIncidentId;
 
         // Remove blur
-        const grid = document.querySelector('.tab-panels');
-        if (grid) grid.classList.remove('blurred');
+        const blurTarget = document.getElementById('incident-view');
+        if (blurTarget) blurTarget.classList.remove('refresh-blurred');
 
         if (incidentId === App.currentIncidentId) {
             const overlay = document.getElementById('progress-overlay');