Hotbar disappears when a Mana And Artifice spell is in it.
Video: https://www.youtube.com/watch?v=VN_nS5sf8jA

Modlist:
mna-forge-1.19.2-2.1.0.6-all.jar
curios-forge-1.19.2-5.1.6.4.jar
geckolib-forge-1.19-3.1.40.jar
ImmediatelyFast-forge-1.4.0+1.19.2.jar

latest.log:
https://gist.github.com/DoktorBeta/0a3a5ee995ab176424c224155383f11f

I cannot add labels to this issue. "bug" and "external-mod" would be appropriate.

The 1.19.2 version of ImmediatelyFast is discontinued and thus won't receive any new bugfix updates. You could however disable one of the optimizations (hud_batching) in the config to most likely fix the issue.