1 files changed, 6 insertions, 2 deletions
diff --git a/src/plugins/platforms/cocoa/qnsview_mouse.mm b/src/plugins/platforms/cocoa/qnsview_mouse.mm
index 77af50119d..a101b5ab6f 100644
--- a/src/plugins/platforms/cocoa/qnsview_mouse.mm
+++ b/src/plugins/platforms/cocoa/qnsview_mouse.mm
@@ -155,8 +155,12 @@
     NSPoint screenPoint;
     if (theEvent) {
         NSPoint windowPoint = [theEvent locationInWindow];
-        NSRect screenRect = [[theEvent window] convertRectToScreen:NSMakeRect(windowPoint.x, windowPoint.y, 1, 1)];
-        screenPoint = screenRect.origin;
+        if (qIsNaN(windowPoint.x) || qIsNaN(windowPoint.y)) {
+            screenPoint = [NSEvent mouseLocation];
+        } else {
+            NSRect screenRect = [[theEvent window] convertRectToScreen:NSMakeRect(windowPoint.x, windowPoint.y, 1, 1)];
+            screenPoint = screenRect.origin;
+        }
     } else {
         screenPoint = [NSEvent mouseLocation];
     }