(Forgive my poor English. I'm not native.)

Yesterday I changed my email in BAM. I successfully received the email of verification. Before this I had changed my email in all projects I joined (I'm not sure if BAM will do it automatically).

Up to now, my email address showed in "account information" have not changed. When I tried to edit it to new address again, it said "Email address already in use".

It seems BAM still works well now. But I'm afraid this will cause further problems. Is this a bug?

Can't speak to the bug, but you didn't have to change your email address at the projects--BAM should do this for you.

Well, it still shows my old email now. There must be something wrong.
Can I ask admin to fix it manually?

Your email address change was not properly processed. It appears that your session was logged out at the time you clicked the "Save" button. You should try it again.

Hmm, a strange problem.
When I tried it again, I got "Email address already in use". So who is using it now while I'm not using it

That's a bug. Even though you were logged out the request was saved under a non-existing account. I fixed that. You can have another go at it.

Thank you, Willy
This time it works correctly.