Latest SDK, Mac OS Sonoma, Macbook Air M2.
I haven't had this issue before, but I updated the SDK a couple of days ago and now it's just happened after leaving my machine unattended, with simulator running, for about an hour.
Restarting/reloading my game (Lua) doesn't clear the memory usage. My Malloc Pool is set to 16MB. My game is running fine in the simulator, and on a device. The game does not continuously log, I think it logged about 5 lines in total.