Board Thread:General Discussion/@comment-35659331-20190124233807/@comment-5811199-20190125003018

It looks this is a bug with the global block - the block is appearing and disappearing when refreshing your user page (a 'phantom block'). Can you contact Staff using Special:Contact/general?

If you can find a block ID (maybe by refreshing a page you can edit), provide it to them as well.