Character flashing on cosmetic preview

The cosmetic preview screen has got a disco strobe flashing thing going on which makes the screen actively unpleasant to use, and may actually be bad enough to serve as an epileptic trigger. I'm running the game on Linux (Pop!_OS) via Steam/Proton, with an AMD/Radeon RX 6700 XT. It might be related to my build, which is an Acolyte Monk with Waking Dream - I haven't unallocated my ascendancy points to test if that might be the source of the flashing.

Bug Report ID: #2086515211
https://imgur.com/a/NblMEUd