{quote=Marco Kalter}Can you provide a screenshot of the specific issue, so that we can verify?{/quote/} (Brackets changed intentionally.)
This doesn't work any more? The error I got: "We Encountered A Problem
For readability, you can only quote messages levels deep. Please edit your message and try again"
Then "Your post has already been submitted. The submit button is now disabled" It isn't actually. I'll try to copy this to a new message.

Surprisingly, I can't even do that any more. The normal reply box is gone, only this large Quick Reply is left without icons to help formatting and inserting an image. Oh, I've found it: "Use Full Editor".

[Linked Image from i.ibb.co]

The upper section with the logo uses too much space, the breadcrumbs too, and the font is too large. The previous/next thread options could fit in the next line (I don't use those, anyway).

Quick Reply is useless for me and I think it takes more space than before.
I've found this archived page for comparison.