Forge Version: forge-13.20.0.2304 (not latest, my server has issues starting otherwise)
Quark Version: Quark-r1.2-92 (latest)
Tinkers Construct Version: TConstruct-1.11.2-2.7.0.26 (latest)
Video of issue: gfycat

Pressing the sort button (usually) causes the casts/patterns Pattern Chest from Tinkers' Construct to disappear. I haven't figured out a way to get any of these casts/patterns back. The very first part of the video shows that it doesn't always cause this issue, but if you reorder the items, it will make this issue occur.

EDIT: This also happens with the latest version of forge (13-20.0.2312)

Might be an issue with the way the chest expands in size on demand.

This is true. I wonder how difficult it'd be to simply remove the sorting buttons from TConstruct's Pattern Chest to avoid this issue?