When I launch They Bleed Pixels from the itch.io desktop app, the memory usage of the butler.exe process as reported by Task Manager immediately increases from the norm of under 50 MB to about 2 and a half GB. This memory stays allocated until the itch app is closed; simply closing the game doesn't help. Launching the game a second time without closing the itch app causes another allocation of the same magnitude. I wasn't able to replicate this behavior when I tested a handful of other games (WitchWay, Dujanah, 9 Till Void), but I'm not certain what about the specific game might cause this problem. The abnormal memory use occurs whether or not the itch sandbox is enabled.
System details: Windows 10 Home, 64-bit, version 1909. itch app 25.4.0, butler 15.17.0, itch-setup 1.23.0. This bug was brought to my attention by a user in a Discord chat, so it affects more than my system.