I think it's either OIS freaking out or the camera rapidly switching between the 0.6x and 1x lense. Happens mostly when I'm zoomed in and focused and then switch to 0.6x. I haven't tested this very thoroughly but so far I've only noticed this on some low light situations.
What may be related to this is also another bug which is that on close-ups, and especially when in low-light, the camera often uses the 0.6x Ultra wide lens on 1x even with Auto Lens Switching OFF (this setting seems to change literally nothing, don't know if this is fixed in later betas / release that samsung is pushing out now on s24's and later other devices.)
Does anybody else have this same or similar issue right now?
Would this be a software bug or a hardware problem, given that this doesnt happen consistently and depends on environment?