I think the problem is the detachment of a developer from what is being done. Many developers want to treat coding like a crative work, while corporations try to make it an automatic job that turns tickets into code. The fact that the person working on a dialog isn't aware that there are translations where things might force a different layout is a proof of a broken system.

I'm not saying that developer should also be UI specialist, that's nonsense. But a developer should know who to talk to regarding advice, and the contact should be easy. The model where a dev doesn't even know that French translation exists is wrong. The correct model is having a dev think "wait, this might affect translation, better send a Slack message to some UI guy and let him know".

Actually, what I said is a pipe dream. The reality is, most devs are average devs, and companies need to optimize processes for that. This results in very official communication that takes years to get anything done, because you can't trust average developer that they'll contact the UI guy. This leads to a lot of frustration from above-average developers, who simply need a different environment to shine (more freedom but also more responsibility)