mru skips first TextChanged events?

[dbmrq]

If I add this to my .vimrc:

    au TextChanged,TextChangedI * echo "changed"

Then use mru to open a file that already has some text in it and do i<cr>, it doesn't print "changed". The event is only triggered on the second <cr>.
Without mru, on the other hand, "changed" is printed as soon as I open the file, even if I don't do anything.