1. get travellers backpack mod
2. get quark
3. open backpack
4. the quark buttons overlay the crafting slot in the travellers backpack

i would say just add the backpack to the blacklist list by default

Hello! Quark's moved to 1.18 now-- unfortunately, this means that (unless your bug is critical and/or game-breaking), we're closing support for issues filed for versions prior to it (e.g. Quark on 1.16).

If your issue still occurs on 1.18, or if your issue happens to be rather critical (e.g. consistently crashing the game with no other mods present), please leave another note or open a new issue. Thanks for your cooperation!