Open Bug 1544179 Opened 2 years ago Updated 2 years ago

Dragging mouse anywhere sometimes drags up media from a previous page


(Core :: DOM: Drag & Drop, defect, P3)

66 Branch





(Reporter: jamesn8, Unassigned)


User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:66.0) Gecko/20100101 Firefox/66.0

Steps to reproduce:

Bug happens at random with regular use in seemingly any scenario that would involve dragging the mouse (including the scroll bar).
Happens in Windows 10.

Actual results:

The mouse "picks up" a random piece of media (usually an image) from a page that may not even be open anymore (even from a private session) as if I had clicked and dragged on that image, so that I see the ghost follow my mouse pointer. Releasing the mouse more often than not replaces the current webpage with the direct link to that image.

There is an archived reddit thread describing exactly this issue (though some of the replies seem to be different issues)

An additional point is that usually, in the event that the dragged media do not replace the current page, the mouse gets "stuck" as if I were still holding down the mouse button, highlighting text on the page until I click again.

Expected results:

Whatever I was trying to do with the mouse, and nothing else (i.e. moving the scrollbar).

Component: Untriaged → Audio/Video: Playback
Product: Firefox → Core

The bug description looks more like a UI event handling issue than media playback bug. Move this to 'Drag and Drop' component for the unexpected behavior was triggered by mouse dragging.

Component: Audio/Video: Playback → Drag and Drop

The priority flag is not set for this bug.
:enndeakin, could you have a look please?

For more information, please visit auto_nag documentation.

Flags: needinfo?(enndeakin)
Flags: needinfo?(enndeakin)
Priority: -- → P3
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