fix: allow popups with popped-out tabs

ChatTwo/Util/Lender.cs

@@ -0,0 +1,23 @@
+namespace ChatTwo.Util; 
+
+internal class Lender<T> {
+    private readonly Func<T> _ctor;
+    private readonly List<T> _items = new();
+    private int _counter;
+    
+    internal Lender(Func<T> ctor) {
+        this._ctor = ctor;
+    }
+    
+    internal void ResetCounter() {
+        this._counter = 0;
+    }
+    
+    internal T Borrow() {
+        if (this._items.Count <= this._counter) {
+            this._items.Add(this._ctor());
+        }
+        
+        return this._items[this._counter++];
+    }
+}