Stash show wrong user in Push activity in PR

Stash on highload can use wrong user name for activity rendering. Something like this:

Some User UPDATED the pull request by adding 1 commit and removing 1 commit
And show commits from Actual User next by this line.

So, the 'Some User' is wrong, actually 'Actual User' performed push. In git repo all recorded fine, the error only in activity stream within PR overview.