diff --git a/local/recipes/tui/tlc/source/src/filemanager/mod.rs b/local/recipes/tui/tlc/source/src/filemanager/mod.rs
index 4df4341eee..7388049fa4 100644
--- a/local/recipes/tui/tlc/source/src/filemanager/mod.rs
+++ b/local/recipes/tui/tlc/source/src/filemanager/mod.rs
@@ -1536,6 +1536,27 @@ mod tests {
         let _ = fs::remove_dir_all(&dir);
     }
 
+    #[test]
+    fn switch_focus_resets_panel_switch_animation() {
+        let dir = std::env::temp_dir().join("tlc-fm-switch-focus");
+        let _ = fs::remove_dir_all(&dir);
+        fs::create_dir_all(&dir).unwrap();
+        let mut fm = FileManager::new(&dir, &empty_cfg()).unwrap();
+        // Settled at 100.
+        assert_eq!(fm.panel_switch_anim, 100);
+        // switch_focus resets to 0 so the border flashes info→accent.
+        fm.switch_focus();
+        assert_eq!(fm.panel_switch_anim, 0);
+        // Ticks advance toward 100.
+        fm.sync_animations();
+        assert!(fm.panel_switch_anim > 0);
+        fm.sync_animations();
+        fm.sync_animations();
+        fm.sync_animations();
+        assert_eq!(fm.panel_switch_anim, 100);
+        let _ = fs::remove_dir_all(&dir);
+    }
+
     #[test]
     fn equal_split_resets_ratio() {
         let dir = std::env::temp_dir().join("tlc-fm-split-equal");