As Designed When someone tags you while editing his post

You don't get an alert!

For example @mjda edited his post to tag me but I didn't got any alert about that!

 

This is as designed. Its consistent with someone editing their post and quoting you.

 

If this is a designed, I think that this behavior should change.

 

I wondered this also if the user got an alert when you went back to edit. Curiosity satisfied.