Umbra Can confirm, donut stars still occur on beta firmware, those were not fixed. To be honest I'm not even sure when those were introduced and if those appeared in December updates too. Also this issue is google-able as something that appears on some other dedicated astronomy cameras, so I'm not even sure if that's a calibration issue or just a product of Bayer matrix, which kills the brightness in some...let's say, red pixel, if the star is mostly blue in colour?
But somehow I'm almost sure that this was not an issue before for me...So maybe it's a bug too. Unfortunately I can't check because due to an unfortunate event I lost my pre-December subs recently. But in my post I showed one which had zero holes in stars.
