Closed issue by ddlws on void-packages repository

https://github.com/void-linux/void-packages/issues/13126
Description: ### System

* xuname:  
  *Void 4.14.133_1 x86_64 GenuineIntel uptodate rFFF*
* package:  
  *qt5-5.13.0_1*

This is a qt bug, even though it's only impacting virtualbox as far as I know. 

Link to upstream patch: https://codereview.qt-project.org/c/qt/qtbase/+/267242
Link to qt bug report: https://bugreports.qt.io/browse/QTBUG-76742
Link to VBox thread discussing it: https://forums.virtualbox.org/viewtopic.php?t=93128#p452133

### Steps to reproduce the behavior
Launch any guest VM and try to type in a host application. It's not possible unless the VM is minimized or you disable the "auto capture keyboard" setting.