Sometimes, the mouse pointer will change to resizer cursor, and I can resize the PiP window by mouse pointer.
But, sometime, it does not. The cursor would not change.
Steps To Reproduce:
- Enable Picture in Picture media.videocontrols.picture-in-picture.enabled=true if not
- Play and Video
- Enter Picture in Picture mode
- Try to resize the Pip window by mouse
The mouse pointer would not be changed to resizer cursor on the PiP window border.
Sometimes, the mouse pointer is changed to resizer cursor. But the pointer will be immediately changed to normal cursor.
So, I cannot resize the window.
At least, A mouse pointer should react like main window.
Regressed by: 0930049c0ca984c909d11ba2853ef6d96e43e242 Mike Conley — Bug 1534389 - Send normal mouse events when cursor is over a draggable region on Windows. r=jmathies
Your patch seems to cause the regression. Can you please look into this?