I’ve used QTabWidget successfully on windows 10 in the past without an issue.
However using on a mac running macOS 11.0.1 I am seeing the text of the selected tab, when it has focus, being blanked out.
The tab text (gets unblanked) only appears when the tab looses focus:
I suspect there is perhaps a style setting to fix this. However I would have expected the default to do sensible things.
Version data as follows:
PYQT_VERSION = 329986
PYQT_VERSION_STR = 5.9.2
QOpenGLVersionProfile = <class ‘PyQt5.QtGui.QOpenGLVersionProfile’>
QOperatingSystemVersion = <class ‘PyQt5.QtCore.QOperatingSystemVersion’>
QT_VERSION = 329990
QT_VERSION_STR = 5.9.6