I had to roll back to previous version due to the following.

Existing shapes do not show up after going in to the shapes GUI, you have to add a new shape to show existing
https://user-images.githubusercontent.com/7688001/144765023-5a762d8a-31a7-4887-aa40-2a2d26950f35.mp4

Add new shape still overlaps the existing GUI

Previous version (minihud-fabric-1.17.1-0.19.0-dev.20210707.150016.jar) does not have the vanishing shapes issue.

Modlist

I noticed that first issue and fixed it during the 1.18 update. I'll also cherry-pick that fix to the 1.17.1 version soon.

As for the overlap issue with the dropdown widget, that sadly won't be touched before the malilib rewrites from 1.12.2 are ready to be ported. Most of the GUI code has been largely rewritten there, and all the widgets now have proper z-height defined and aren't sort of arbitrary anymore like in the old code base that is still in these current 1.13+ versions.