I’m noticing that last couple of lines on one page occasionally repeat at the top of the next page. Using Bookerly Bold 1 Size 2.
And yes, I have had it skip a page. Quick fix is to change font size (pinch/spread gesture).
These things do seem more frequent than in the past.
To report bugs, I’ve used
kindle-feedback@amazon.com. I don’t know if it helps in terms of getting action, but always get a polite reply.