fix(windows): wait for Qt before getting bounds (#5478)

src/widgets/BaseWindow.cpp

@@ -240,7 +240,7 @@ BaseWindow::BaseWindow(FlagsEnum<Flags> _flags, QWidget *parent)
 #ifdef USEWINSDK
     this->useNextBounds_.setSingleShot(true);
     QObject::connect(&this->useNextBounds_, &QTimer::timeout, this, [this]() {
-        this->currentBounds_ = this->nextBounds_;
+        this->currentBounds_ = this->geometry();
     });
 #endif
 
@@ -1137,7 +1137,11 @@ bool BaseWindow::handleSIZE(MSG *msg)
 
             if (this->isNotMinimizedOrMaximized_)
             {
-                this->currentBounds_ = this->geometry();
+                // Wait for WM_SIZE to be processed by Qt and update the current
+                // bounds afterwards.
+                postToThread([this] {
+                    this->currentBounds_ = this->geometry();
+                });
             }
             this->useNextBounds_.stop();
 
@@ -1166,7 +1170,8 @@ bool BaseWindow::handleMOVE(MSG *msg)
 #ifdef USEWINSDK
     if (this->isNotMinimizedOrMaximized_)
     {
-        this->nextBounds_ = this->geometry();
+        // Wait for WM_SIZE (in case the window was maximized, we don't want to
+        // save the bounds but keep the old ones)
         this->useNextBounds_.start(10);
     }
 #endif