In version 1.12.2, if I show the weight of an armor in the gui and the quark descriptions are enabled, the game crashes. Is there a way to have both descriptions at the same time?

Getting a consistent crash (have had this crash about 4-5 times now) when hovering over items in JEI and I'm thinking this is the problem, did your crash look similar to this at all?

https://mclo.gs/Lz0xBs6
https://mclo.gs/OTIzSQy
https://mclo.gs/0GdV8VV

I'm guessing changing this setting to false will fix the issue:
Whether to show armor weight tooltips. If Quark is installed, please restart the game after disabling or enabling 'Quark Settings -> Client -> Visual Stat Display'.
B:"Show Tooltips"=true

And I'll be testing this setting too since I'm using so many mods:
Whether to enable compatibility mode for the HUD. If it isn't working as expected, try this.
B:"Compatibility HUD"=false