I have been playing with the touchbar support in texmate and have noticed the following.

If I set bookmarks in my document the touchbar buttons with up/down chevrons will correctly take me to the previous or next bookmark respectively.  

However, if I make a change to the document and save it.  I now get a change marker showing that it is different than what is in the git repository. That is to be expected.

But now the up/down buttons on the touchbar stop at all of the git markers as well as the bookmarks.  Is this by design?

It makes jumping back and forth between a couple of bookmarks painful if there are a lot of edits in the file.

I can still hold down the fn button and use F2/Shift F2 to achieve this, but that sort of defeats the purpose of having the nifty touch bar buttons.