Now that you mention, I did have an issue after a suspend. All text was missing inside firefox, restarting it resolved the issue. But I keep my laptop plugged in and open 99% of the time with presentation mode enabled, so this is extremely rare for me.
It seems to pretty consistently break after suspend, with the text looking like an ms-dos machine with bad vram.
I enabled EGL in response to seeing your comment this morning, then found myself having to turn it back off after the very first suspend/resume.