I had a workspace with 13 user parameters. When renaming them all, I accidentally erased one's identifier, and it duplicated it and the new one is bugged.
When I try to save, the workspace crashes. After publishing it on the server, trying to run it shows not a single user parameter.
I can not delete it, and it is linked to every single transformer of the workspace (copy pasting any transformer from the bugged workspace to a new one imports the bugged user parameter and therefore corrupts the workspace).