User blog comment:Kirkburn/The expanding world of the VisualEditor/@comment-24589952-20141110110559/@comment-126761-20141110174324

Regarding the edit summary autocomplete - the problem is that native browser autocomplete only works on certain types of input fields. Unfortunately, 'textarea' - a multiline input area, which gives the most design flexibility - is not one of them.

As with all things, the design is not set in stone - and I will bring this up with the team.