If you’re wearing two Lord Jahrfyre the Grim arms and then try to wear the Pepper Krinklesnaps torso while your character is R6, then the torso will show as a regular rectangular torso. Trying to wear some other Rthro or non-Rthro torso, wearing a different pair of arms, or having an R15 avatar does not make this bug happen. Once you remove one of the Jahrfyre arms, the torso shows up. Clicking the ‘Redraw’ button does not fix this bug.
Repro Video:
This bug happens 100% of the time on my Windows 10 laptop and started happening when the package first came out.
To reproduce it, wear two Lord Jahrfyre arms and the Pepper Krinklesnaps torso, and make sure your avatar is set to R6. The torso should show as the default torso.