The possible workaround is unsetting `QT_QPA_PLATFORMTHEME` in ~/.profile file. A workaround is described in this askUbuntu answer written by me http://askubuntu.com/a/817066/61218
You put these in ~/.profile
## Fixing QT style override problem
if [ "x$XDG_SESSION_DESKTOP" == "xKDE" ]; then
unset QT_STYLE_OVERRIDE
unset QT_QPA_PLATFORMTHEME
fi
The possible workaround is unsetting `QT_QPA_ PLATFORMTHEME` in ~/.profile file. A workaround is described in this askUbuntu answer written by me http:// askubuntu. com/a/817066/ 61218
You put these in ~/.profile
## Fixing QT style override problem SESSION_ DESKTOP" == "xKDE" ]; then PLATFORMTHEME
if [ "x$XDG_
unset QT_STYLE_OVERRIDE
unset QT_QPA_
fi