The HUD doesn't hide but the items do.

Fixed in def15d4, at least for hotbar-aligned (default) setup.

Warning indicators don't move.

Hm, should they? I started looking into how to fix that (doesn't seem possible without upstream changes), but a warning indicator seems like something one would want to pop up anyways.

I guess its nice to keep but then lower it as its currently floating quite high haha
Its not that big of a deal tbh as its only seen when the armour is about to break

I sadly can't change the height, that would require changes in the other mod. I have to consider this "good enough" for now.