popout: avoid calling close on bad reference

core/internal/server/wlroutput/manager.go

@@ -13,7 +13,7 @@ func NewManager(display wlclient.WaylandDisplay) (*Manager, error) {
 	m := &Manager{
 		display:    display,
 		ctx:        display.Context(),
-		cmdq:       make(chan cmd, 128),
+		cmdq:       make(chan cmd, 512),
 		stopChan:   make(chan struct{}),
 		dirty:      make(chan struct{}, 1),
 		fatalError: make(chan error, 1),

quickshell/Common/PopoutManager.qml

@@ -1,4 +1,5 @@
 pragma Singleton
+pragma ComponentBehavior: Bound
 
 import Quickshell
 import QtQuick
@@ -13,6 +14,7 @@ Singleton {
     signal popoutChanged
 
     function _closePopout(popout) {
+        try {
             switch (true) {
             case popout.dashVisible !== undefined:
                 popout.dashVisible = false;
@@ -21,13 +23,22 @@ Singleton {
                 popout.notificationHistoryVisible = false;
                 return;
             default:
+                if (typeof popout.close !== "function")
+                    return;
                 popout.close();
             }
+        } catch (e) {
+            return;
+        }
     }
 
     function _isStale(popout) {
         try {
-            return !popout || !("shouldBeVisible" in popout);
+            if (!popout || !("shouldBeVisible" in popout))
+                return true;
+            if (!popout.screen)
+                return true;
+            return false;
         } catch (e) {
             return true;
         }