Open Bug 1272084 Opened 4 years ago Updated 1 year ago
Autoscrolling should not work for overflow:hidden scroll frame
STR: 1. Load http://people.mozilla.org/~bballo/hidden.html 2. Autoscroll (that is, scroll the page by clicking the middle mouse button and moving the mouse). Expected results: The page is not scrolled, since it's marked overflow:hidden Actual results: The page is scrolled This behaviour is unrelated to APZ, and has been in place since at least Firefox 44.
(In reply to Botond Ballo [:botond] from comment #0) > This behaviour is unrelated to APZ, and has been in place since at least > Firefox 44. So it's a regression?
I tested as far back as Firefox 19, and the behaviour has been the same since then. Firefox 18 and earlier either won't run at all or are completely unusable on my system, so I couldn't test with them. So, this is most likely not a regression. It's always been broken.
Bug 1259357 has issues with mouseup events in overflow:hidden; maybe related?
Component: Event Handling → User events and focus handling
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