diff --git a/src/services/tabs.fg.move.ts b/src/services/tabs.fg.move.ts
index 141f7887..31f42ce8 100644
--- a/src/services/tabs.fg.move.ts
+++ b/src/services/tabs.fg.move.ts
@@ -26,6 +26,15 @@ export async function move(
     if (dst.windowId === NOID) return
   }
 
+  // Check if target panel exists
+  if (dst.panelId) {
+    const dstPanel = Sidebar.panelsById[dst.panelId]
+    if (!Utils.isTabsPanel(dstPanel)) {
+      Logs.warn('Tabs.move: wrong type of target panel:', Utils.clone(dstPanel))
+      return
+    }
+  }
+
   // Move tabs from another window to this window
   if (src.windowId !== undefined && src.windowId !== Windows.id) {
     const tabIds = tabsInfo.map(t => t.id)
@@ -86,7 +95,7 @@ export async function move(
   }
 
   // Gather tabs by type (pinned/normal), get initial info
-  const dstTab: Tab | undefined = Tabs.list[dst.index]
+  const dstTab = Tabs.list[dst.index] as Tab | undefined
   const dstParent = Tabs.byId[dst.parentId]
   const pinnedTabs: Tab[] = []
   const normalTabs: Tab[] = []
@@ -103,6 +112,7 @@ export async function move(
     tabs.push(tab)
   }
 
+  if (dstTab?.pinned && !dst.pinned) return
   if (!tabs.length) return
 
   // Switch panelId of pinned tabs and exclude them from general list