1) run qtquickcontrols2/examples/labs/controls/tabs
2) observe that the text in tab buttons is mis-aligned (see attache d 2_after_startup.png)
3) resize the window vertically
4) observe that the text in tab buttons is mis-aligned (see attached 4_resized_vertically.png)
5) resize the window horizontally
6) observe that the text in tab buttons is no longer mis-aligned (see attached 6_resized_horizontally.png)

The problem is probably in QQuickText, but the issue is easy to reproduce with QQC2.