Open Bug 1272084 Opened 4 years ago Updated 1 year ago

Autoscrolling should not work for overflow:hidden scroll frame

Categories

(Core :: DOM: UI Events & Focus Handling, defect)

defect
Not set

Tracking

()

Tracking Status
firefox49 --- affected

People

(Reporter: botond, Unassigned)

References

Details

(Whiteboard: btpp-backlog)

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?
Flags: needinfo?(botond)
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.
Flags: needinfo?(botond)
Bug 1259357 has issues with mouseup events in overflow:hidden; maybe related?
Whiteboard: btpp-backlog
See Also: → 325942
Component: Event Handling → User events and focus handling
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