I understand why @alerts are being removed.
My question is related to the inconsistency between the 'characters remaining' count while typing and the removal of the @alert pushing the count under the limit.
It was very confusing for me, as i'd type away, see that the comment had enough characters, then be presented with the message.
I think a lot of new (and existing?) users would find this confusing.
In this case (where removal of an @Alert is directly responsible for making a comment under the char limit) should a more appropriate message should be displayed?
(I'm not questioning the decision to remove @alerts that would be sent anyway.)