https://github.com/AmberWat/NegativeSpaceFont

Using this resource pack and running

/tellraw @a [{"text": "Start", "color": "blue"},{"translate": "space.-11"},{"text": "End", "color": "red"}]

displays

when using Fabric Loader 0.14.19 and Fabric API 0.77.0+1.19.4

Removing Fabric API (but not Fabric loader) makes the font display correctly

That sounds like #2943

Have you got any other mods installed? I cannot reproduce this in a fabric API development env:

A log file might also be helpful.

No worries, glad its working 👍

Another resource pack was interfering with the translations, apologies for taking your time 🤦

There was still a discrepancy between vanilla/Fabric, I'm guessing the lang file load order from different resource packs is different or something, but can resolve this myself 😅