Law #0: don't reflowb or otherwise move around the UI element I'm going to click on.
This one has somehow found its way into the iOS photos app of all places. Something is deeply amiss in the industry if the corporate avatar of design misses that one.
HATE Google Search for that, this dumb "people also ask" and the Gemini answer that takes ages to generate and pushes the whole content down.
also: don't distract with unnecessary and unrelated graphics
This drives me up a wall. Short of UX and front end devs taking this seriously, ive always wondered if theres a way for an OS level / browser level UX library to keep track of the "clickable state" 20ms ago (configurable to the user's reaction time liking) so the thing I click on is what my brain thought it was clicking on.
The better solution is developers and designers taking a sense of pride and craftmanship in this sort of thing. So many of my least favorite interfaces are presumably designed and implemented in an environment with a gigabit connection to their apps backend so they never catch it.