Xorg grab problem (usually VirtualBox)

gistfile1.txt

https://gist.github.com/CyberShadow/6412d11aea64144f8905cc0b8196f38e

$ xdotool key XF86LogGrabInfo

/var/log/Xorg.0.log:
```
[146599.664] (II) Printing all currently active device grabs:
[146599.664] Active grab 0x42a001f7 (core) on device 'Virtual core pointer' (2):
[146599.664]       client pid 91115 /usr/lib/virtualbox/VirtualBoxVM --comment wintpc-2 --startvm {0d02dc3f-7a59-47a8-b72d-6a4ab49ff93d}
[146599.664]       at 146394073 (from passive grab) (device frozen, state 6)
[146599.664]         core event mask 0x4
[146599.664]       passive grab type 4, detail 0x0, activating key 0
[146599.664]       owner-events false, kb 1 ptr 0, confine 0, cursor 0x0
[146599.664] (II) End list of active device grabs
```
```
[1199428.782] (II) Printing all currently active device grabs:
[1199428.782] Active grab 0x4c00000 (core) on device 'Virtual core pointer' (2):
[1199428.782]       client pid 15620 /usr/lib/firefox/firefox 
[1199428.782]       at 1199423728 (from active grab) (device thawed, state 1)
[1199428.782]         core event mask 0x7c
[1199428.782]       owner-events true, kb 1 ptr 1, confine 0, cursor 0x0
[1199428.782] (II) End list of active device grabs
```

https://unix.stackexchange.com/questions/59141/find-x-org-pointer-grab-owner

https://unix.stackexchange.com/questions/40458/command-for-forcing-a-pointer-ungrab-captured-mouse-release

setxkbmap -option grab:break_actions
xdotool key XF86Ungrab