As reported on twn:
"Since yesterday, the edit window have used proportional font (“font-family: Helvetica,Arial,sans-serif”), set directly on the element using a JS somewhere, so that it is difficult to find the specific cause. I suspect WebFonts are somehow to blame here, but I’m not sure about that. Anyway – is this a feature, or a bug, and can I have the monospaced font back, please? (Changing the font in preferences does not work, since that just emits a CSS rule for textarea, which is overriden by a specific style declaration directly on the element, set by the JS.)"
Santhosh confirmed this issue.
Version: master
Severity: normal
URL: https://translatewiki.net/w/i.php?title=Thread:Support/Can_I_have_my_monospaced_font_back,_please%3F