OS: Manjaro Linux 64bit
After upgrading to version 0.88 (needed to fix fontconfig issue) the system theme is not applied to XnView. All other QT apps work fine with the system theme. Qt5ct is set up.
Effect: Xnview will only apply Qt's default theme.
To reproduce:
1. Install version 0.88
2. Start XnView
Actual behaviour (bug): Fails to apply system theme
