Linux issue: painting in the frameworks branch with a tablet, on the first dab is painted, afterwards you get a stream of
```
krita(22979)/(default) unknown: Unexpected tool event has come to continuePrimaryAction while being mode 0 !
krita(22979)/(default) unknown: Unexpected tool event has come to continuePrimaryAction while being mode 0 !
krita(22979)/(default) unknown: Unexpected tool event has come to continuePrimaryAction while being mode 0 !
```
Qt Wintab bug report: https://bugreports.qt.io/browse/QTBUG-47874