Register deadline timer for closing transaction

src/handlers/compositor.rs

@@ -219,9 +219,15 @@ impl CompositorHandler for State {
                             id: u64::from(id.get()),
                         });
 
-                    self.niri.layout.remove_window(&window, transaction);
+                    self.niri.layout.remove_window(&window, transaction.clone());
                     self.add_default_dmabuf_pre_commit_hook(surface);
 
+                    // If this is the only instance, then this transaction will complete
+                    // immediately, so no need to set the timer.
+                    if !transaction.is_last() {
+                        transaction.register_deadline_timer(&self.niri.event_loop);
+                    }
+
                     if was_active {
                         self.maybe_warp_cursor_to_focus();
                     }

src/handlers/xdg_shell.rs

@@ -498,9 +498,15 @@ impl XdgShellHandler for State {
         let active_window = self.niri.layout.active_window().map(|(m, _)| &m.window);
         let was_active = active_window == Some(&window);
 
-        self.niri.layout.remove_window(&window, transaction);
+        self.niri.layout.remove_window(&window, transaction.clone());
         self.add_default_dmabuf_pre_commit_hook(surface.wl_surface());
 
+        // If this is the only instance, then this transaction will complete immediately, so no
+        // need to set the timer.
+        if !transaction.is_last() {
+            transaction.register_deadline_timer(&self.niri.event_loop);
+        }
+
         if was_active {
             self.maybe_warp_cursor_to_focus();
         }