Regression: specific text is not drawing fully using QPainter::drawText(rect, text) on Linux

The specific text, for example "1:01", "1:00", "1.00" is not showing correctly on Ubuntu 18.04 wayland using Qt 5.11.2 and 5.12.0 b1.

Other text, say "2:00" is showing ok.

I tried same with Qt 5.10.1 - it's working ok.

The bug arises only if using drawText(rect, text), while drawText(point, text) is working well.

I attached in screenshots from 5.10.1 and 5.11.2 where you can see the difference.

The minimal bug test project is attached as well.

Regards, Dilshod