Comment 4 for bug 1853617

It's me who needs to apologize for replying late.

Ok, this looks bad. I notice how some text, but not all, and only the Y component of the position (the X component for vertical text) appears to be affected.

My guess would be that it's a bug with vertical alignment depending on the anchor (top, middle, or bottom). Could you please try the attached testcase to verify this?