I just accidentally clicked the “clear all” on the browser URL and wished that it was a bit harder to click but was still there. If it took three clicks to make happen, its still useful in most circumstances but would drastically drop the mistaken clicks
Anyway, what are your unpopular UI opinions?
The modern trend for “flat” UIs absolutely sucks. There is no separation between element layers, so you can’t tell where one windows starts and another begins when they are overlapping.