Yes, I’ve got it now. After I’ve opened it and want to decrypt it I have to click the broom icon which first checks for a lock and if there’s none, it re-encrypts. Then I can decrypt.
Strange that AxCrypt says there IS a lock though.
Another handy option would be to “Rename to original name” an encrypted file so you can see its real name without having to decrypt. Or do a toggle “random name/original name” if you click “Rename”.