--- a/src/wayland/popupanchor.cpp
+++ b/src/wayland/popupanchor.cpp
@@ -3,6 +3,7 @@
 #include <private/qhighdpiscaling_p.h>
 #include <private/qwayland-xdg-shell.h>
 #include <private/qwaylandwindow_p.h>
+#include <private/qwaylandshellsurface_p.h>
 #include <private/wayland-xdg-shell-client-protocol.h>
 #include <qvariant.h>
 #include <qwindow.h>
@@ -29,6 +30,17 @@
 	anchor->markClean();
 
 	if (popupRole) {
+#if QT_VERSION >= QT_VERSION_CHECK(6, 12, 0)
+		// WHY: Qt tracks popup reposition tokens and suppresses rendering until
+		// its token is acknowledged. A second raw request with token 0 can
+		// supersede Qt's request and leave the surface permanently unexposed.
+		// CONTRACT: Qt owns the entire reposition/acknowledgement lifecycle.
+		// Keep Quickshell's anchor properties, then request placement through
+		// the Qt shell surface so size and anchor changes use the same owner.
+		WaylandPopupPositioner::setFlags(anchor, window);
+		waylandWindow->shellSurface()->setWindowGeometry(waylandWindow->geometry());
+		return;
+#endif
 		auto* xdgWmBase = XdgWmBase::instance();
 
 		if (xdgWmBase->QtWayland::xdg_wm_base::version() < XDG_POPUP_REPOSITION_SINCE_VERSION) {