I'm humbly requesting support with the Better Slabs mod (https://www.curseforge.com/minecraft/mc-mods/better-slabs).
Currently, trying to use the two mods together causes strange visual bugs when placing Mo Glass slabs vertically.
Would adding support be possible in a future version?

A different mod, but I'm the developer of Full Slabs and am working on making this mod compatible with it in the next version if you're looking for alternatives.

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Interesting. Could you post a screenshot showing what these visual bugs look like?

Here, I've taken some screenshots, but it also appears that there's more than just visual bugs.
There's also a bunch of stuff in the log complaining about it, too (starting on line 436): https://paste.ee/p/aR12k
Also, with both mods enabled, I'm unable to place horizontal Mo Glass slabs, or vertical ones facing specific directions.

(The black outline is the collision, as you can see the model's position doesn't match up with it at all.)