Just read about a bug that started ~ Fx v17 w/ font rendering. I upgraded to 18.0.2 just now & I CAN now control the size of SUBMITTED posts' font (again). I knew I wasn't imagining it.
But the font in the quick reply or full editor box is still ~ 2/3 the size of submitted posts font (using my Fx settings).
Which is way too small for me, except for VERY short replys.
So, something still prevents the size in the reply composer
windows from increasing font size. May be ANOTHER Fx bug they didn't fix (or didn't know about). Normally, the size in an editing screen like this would be roughly the same size as the text of a submitted post (for me) - on most any forum - in the past.
Now, as before upgrading to Fx 18.0.2, only way I can make text in editor larger, is AFTER I type it, select it & choose large font size. But that doesn't affect any further typing, in the same editor screen. Screen below (now w/ Fx 18.0.2) shows posted font size (16) & ? Neowin controlled ? editor font size.
EDIT: Just checked Mozilla's & Kaspersky's forum text & editor screen font size. Editor & submitted posts font sizes are the same size (as most forums have been in the past, for me).
So, THAT part seems related to Neowin or the forum software they use. Which I guess is "Ignition?"