Have you tried this yet? https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/working-with-forks/syncing-a-fork (edit: Enter sends in this work space rather than Shift+Enter ๐ )
Hi Filipe P. there is not an issue in 2.55.2, but since 2.55.3 came out today, I would recommend going with 2.55.3 instead!