diff --git a/ui-electrobun/src/mainview/App.svelte b/ui-electrobun/src/mainview/App.svelte
index cb12bde..a461fdb 100644
--- a/ui-electrobun/src/mainview/App.svelte
+++ b/ui-electrobun/src/mainview/App.svelte
@@ -95,12 +95,17 @@
   function onDragStart(e: MouseEvent) {
     const target = e.target as HTMLElement;
     if (target.tagName === 'BUTTON' || target.tagName === 'INPUT' || target.closest('button') || target.closest('.rz')) return;
-    // Don't drag if click is within the resize border zone (8px from any edge)
-    const B = 8;
-    if (e.clientX < B || e.clientY < B || e.clientX > window.innerWidth - B || e.clientY > window.innerHeight - B) return;
+    // Don't start drag if click is within resize border zone (10px from any window edge).
+    // The native C resize handler (on the WebView) needs these clicks.
+    // Also prevent drag near the sidebar's own edges to avoid overlap.
+    const B = 10;
+    const winW = window.innerWidth, winH = window.innerHeight;
+    if (e.clientX < B || e.clientY < B || e.clientX > winW - B || e.clientY > winH - B) {
+      return; // Let native resize handle this
+    }
     // Delegate to GTK — the WM handles everything (smooth, zero CPU)
     appRpc.request['window.beginMove']({
-      button: e.button + 1, // DOM: 0=left, GTK: 1=left
+      button: e.button + 1,
       rootX: e.screenX,
       rootY: e.screenY,
     }).catch(() => {});
diff --git a/ui-electrobun/src/mainview/app.css b/ui-electrobun/src/mainview/app.css
index 9e1048f..981f9ad 100644
--- a/ui-electrobun/src/mainview/app.css
+++ b/ui-electrobun/src/mainview/app.css
@@ -83,6 +83,7 @@ html, body {
   flex-direction: column;
   align-items: center;
   padding: 0.5rem 0;
+  padding-left: 10px; /* Leave space for native resize edge (8px + margin) */
   gap: 0.25rem;
 }