tastudio branches and markers take too much horizontal space in flipped mode

[vadosnaprimer]

normal mode:

rotated:

after manual resizing:

there's no reason for them to take more horizontal space than in normal mode, especially because the input roll is now horizontal, so it needs even more of this horizontal space to look good.

[YoshiRulz]

Didn't do a full bisect, but it looks like it worked properly in 2.10 but not 2.11.

[SuuperW]

Commit 1e39743, response to issue #3708.

The complaint with the old behavior was that the TAStudio window needs to be significantly taller than the height of a rotated input roll in order to have adequate space for the stuff on the right. Meaning the bottom-left area is a big empty space.

[vadosnaprimer]

How about this

[SuuperW]

That seems sensible to me, but I never actually use horizontal mode.