We are using eglfs in VxWorks which make 3 few testcases fail, because eglfs windows are fullscreen by default.
This is the same solution as in qt5 in tag 5.12.6 from commit with hash 39027ef076c.
[...] EGLFS forces the first top-level window - either a QWidget or a QQuickView - to become fullscreen. [...]
from: https://doc.qt.io/qt-6/embedded-linux.html
Change-Id: I3ab3208b3c7c1b2e27d879bac1ee0679f48109e2
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>