Terence EdenMar 13

I think I've found a font rendering bug in #Firefox (and possibly Safari).

On the National Theatre website, Ronkẹ Adékọluẹ́jọ́'s name doesn't embolden characters with diacritical marks.

As far as I can see, the included Web Font contains é (U+00E9) and both ́ (U+0301) & ̣ (U+0323).
But doesn't include ẹ (U+1EB9) or ọ (U+1ECD).

Any thoughts on what's causing this and whether it is worth reporting?

URl: https://www.nationaltheatre.org.uk/artists/ronke-adekoluejo/
Font: https://www.nationaltheatre.org.uk/themes/childtheme/assets/fonts/5760911/470ca328-5bc8-43ae-b713-6fb2efeea277.woff2

Show threadTerence Eden

If you have Safari on a Mac or iOS, could you please send me a screenshot of the output of this page?

https://codepen.io/edent/pen/qEaRyrz

Thanks!

FF Font Rendering Issue?

...

Mar 13 at 11:01amWeb
Show threadTerence EdenMar 13

Thanks all.

Raised as a bug with both #Firefox and #Safari.

https://bugzilla.mozilla.org/show_bug.cgi?id=2023126
https://bugs.webkit.org/show_bug.cgi?id=309889

2023126 - Broken rendering of a font with combining diacritics

UNCONFIRMED (nobody) in Firefox - Untriaged. Last updated 2026-03-13.

Show threadLaura KalbagMar 13
@Edent Safari on macOS
Show threadTerence EdenMar 13
@laura
Ooooooh! So broken there as well?
Ta mate!
Show threadLaura KalbagMar 13
@Edent looks like it!
Show threadEric GoodwinMar 13
@laura @Edent and iOS. Current os.
Show threadMike Coats 🏴󠁧󠁢󠁳󠁣󠁴󠁿🇪🇺🌍♻️Mar 13
@Edent Safari on iOS.
Show threadEliza MBMar 13

@Edent

I barely use Safari, but AIUI all iOS browsers use the same underlying tech. My default on this iPad is either brave or Vivaldi, I’ll check which if you want a screenshot anyway.

Show thread@PrivacyMattersMar 13
@Edent safari iOS
Show threadThomas RigbyMar 13
@Edent
Show threadErik AblesonMar 13
@Edent coming from Safari on an iPad running 26.3.1
Show threadCat WestMar 13
@Edent
Show threadCat WestMar 13
@Edent Same as @erik