Group avatar flair and scrollbar in the search bar seem to be fixed.
Then to even more stuff:
The admin notification bubble still shrinks when opening the hamburger menu (but now it’s the right size at least half of the times it shows up):


The delete topic button in the admin wrench is the same colour as the other options, not highlighted with the danger colour. I am torn on this.

The gap below a quote is wider than the one above.
There is a miniature scrollbar on the tags field in the composer
Spoilerising the first line of a post makes the gap between the post “header” and the text wider than usual:
If the op in a topic is flagged, the message telling admins it’s been flagged creates a gap between the post and the topic information bit. While I love the floating flag messages under posts, I don’t think it looks good as is on topics:
When viewing a deleted post the only indication that it is deleted is the red bar at the bottom. Perhaps making the post header red would look better?
The icon of the user who deleted the post is crammed into the bottom of the red bar:
The notification bubbles are misaligned:

The highlight if the op is also the latest poster is almost impossible to see:

Unchanged text in the edit history is quite dark and hard to read:
Text removed in the edit history is even harder to read:
But I really like the text added in the edit history, so you can/ should leave that alone.
On my iPhone SE, the new topic button showed up like this, but after reloading the page I am unable to repro. I’ll report back if it happens again.

When pressing the post menu show more button there is a wave/ ripple-like effect on the buttons that show up.
Really like this. I was writing that I was looking forward to seeing this, and then you went ahead and made change as I was writing.
Also, I’ve been meaning to ask, why call the theme Vincent?