Recently me and my team started experiencing this weird behaviour where an input component automatically resizes when editing text. Additionally, auto layout behaviour is reset to fixed widths for a couple of layers. I double checked the auto layout behaviour in the component itself and found everything was as it should be.
See Figma resizes component when changing text
I reached out on the FoF Discord as well and another user mentioned he experienced the same behaviour. I suspect it is a bug in Figma.