If you do the following:
1- Create a new entry
2- In said entry add a key
3- Remove said entry
4- Create a new entry
5- Add the same key as in step 2
the localization page believes that the removed key still exists until you refresh the page, giving you an error.
Video:
Device Info
User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36
Platform Type: PC
Device Type: Computer
Expected behavior
Removed keys should be reflected immediately.
Page URL: https://create.roblox.com/dashboard/creations/experiences/GAME_ID/localization/translation