647739 - Embed video replays after closing Facebook photo page

Status: RESOLVED DUPLICATE of bug 90268

(Core Graveyard :: Plug-ins, defect)

Description

[Mehdi Mulani [:mmm] (I don't check this)]

This issue shows up on Facebook news feeds or profiles.

STR:
Play an embed video on a Facebook page and pause it, in my tests I played a Youtube video.
From the same page click on a photo that takes you to the lightbox-like interface. Hit Esc to exit from the photo.

At this point the embed video replays from the start when it was paused before.

Comment 1

[Boris Zbarsky [:bzbarsky]]

What does the page actually do in this case?  Does it send the plugin through display:none somewhere in there?

Comment 2

[Mehdi Mulani [:mmm] (I don't check this)]

Attachment: Reduced testcase that triggers the bug.

(In reply to comment #1)
> What does the page actually do in this case?  Does it send the plugin through
> display:none somewhere in there?

Bingo! The attached testcase toggles display:none and does a getBoundingClientRect to force a repaint, and it causes the problem to show up.

Comment 3

[Matthew McPherrin]

I don't think display:none; is what's going on here. I don't see that happening on Facebook.

As well, Google Chrome has the same behaviour as Firefox on Mehdi's attachment, whereas it doesn't have the bug on Facebook.  Investigating for a new reduced testcase.

Comment 4

[Boris Zbarsky [:bzbarsky]]

Right.  display:none would _definitely_ have this behavior; the question is what the page actually does.

Comment 5

[Matthew McPherrin]

Attachment: Reduced testcase

Reduced testcase.

changing the overflow attribute on body to hidden and back seems to cause the plugin to reload.

Comment 6

[Boris Zbarsky [:bzbarsky]]

Ah, ok.  So yeah, reframing.