this is a recurring problem, spanning two bikes.... i'm out.
and, for the record... SRAM drivetrains are a problem waiting to cause questions.
i just went thru one such problem last month... repeated backpedal derails/jams on a 12sp. NX eagle.
the "New Flat Top Design!" chain SRAM said would solve the problem only partially helped.
good luck, peter.
PS, as a Co-Op shop owner, i shop for used parts frequently.. and a Way out-of proportion number of SRAM parts show up as "New take off" and "lightly used".... hint, hint.

https://www.pinkbike.com/forum/listc...hreadid=221000