1017296 - Pointer hover affects different element than what's under pointer location (pointer click unaffected)

Status: RESOLVED WORKSFORME

(Firefox :: Untriaged, defect)

Description

[Mike Beltzner [:beltzner, not reading bugmail]]

Attachment: My mouse pointer is where the circle is

Perhaps related to connecting/disconnecting from an external monitor, but I find that every now and again on latest Firefox Nightlies, OSX 10.9.3, the element on the page responding to :hover is up and to the left of where the mouse pointer is; thankfully click still acts on the object beneath the pointer.

So if I'm pointing at, say, a message in my Gmail inbox, the grey "grabber" appears 3 messages above it. Clicking will activate the message I'm pointing at, though.

(This may end up being a Core bug)

Comment 1

[Mike Beltzner [:beltzner, not reading bugmail]]

(Restarting the browser repairs the problem, FWIW)

Comment 2

[Steven Michaud [:smichaud] (Retired)]

Good STR will be much appreciated :-)

In the meantime a fix for bug 1013852 has just landed on mozilla-inbound, and should appear in tomorrow's m-c nightly or the next day's.  Once it does appear in a m-c nightly, please try it out.

Comment 3

[Steven Michaud [:smichaud] (Retired)]

It's hard to understand how this is related to bug 1013852.  Boris, why did you set this dependency?

Comment 4

[Boris Zbarsky [:bzbarsky]]

Hmm.  I thought this was the bug I was seeing with hover randomly not taking effect at all, but reading more carefully shows I was probably wrong.  We should still retest once bug 1013852 is fixed, assuming this is sort of reliably reproducible.

Comment 5

[Steven Michaud [:smichaud] (Retired)]

My fix for bug 1013852 has just appeared in its first m-c nightly -- today's.

Comment 6

[Ciprian Muresan [:cmuresan], Ecosystem QA]

Hi,

I haven't managed to reproduce this issue on the latest Firefox release (43.0.4) nor the latest Nightly (46.0a1).

Is this issue still reproducible on your end?

Thanks,
Cipri

Comment 7

[Ciprian Muresan [:cmuresan], Ecosystem QA]

Since the reporter didn't provide the requested information the fact that I could not reproduce the issue, I will mark this issue as RESOLVED WORKSFORME. If you still encounter this problem, please feel free to reopen this bug, or file a new one.

Comment 8

[Saad Shamsaee]

This happens to me on Facebook and similar sites. Specially when internet speed is low. For example in Facebook.com, I click on a Like, it doesn't happen in a matter of seconds and then I see a clicked on the bottom post link! It always makes me angry. i use Nightly always.