1316646 - Flickering e10s slow script notification bar can't be dismissed

Status: RESOLVED INCOMPLETE

Description

[[:philipp]]

Created attachment 8809489 [details]
screencast

today i came across a site which produces an e10s slow script bar which is constantly showing up, going away & reappearing in quick succession (see the attached screencast).
in this condition it doesn't seem to be possible to stop the script, close the offending tab or even close the whole browser window if you are not fast enough.

regression testing comes up with this pushlog:
https://hg.mozilla.org/integration/mozilla-inbound/pushloghtml?fromchange=74d3c0c9b49c4714f4791577cf7d3f31d147fe19&tochange=d20bb8617b2597b89456413119b40ff02bf77b09 - so probably introduced by bug 1164931

Comment 1

[Bill McCloskey [inactive unless it's an emergency] (:billm)]

It looks like the site is private. Is there any way I could reproduce this? It will be pretty hard to do anything about it otherwise.

Comment 2

[[:philipp]]

it's a private staging site for mozilla support, but by now the issue doesn't reproduce there anymore.
if it isn't apparent from the description or regression range what might have gone wrong there, i guess we'll have to close the report as incomplete then...

Comment 3

[:Gijs (he/him)]

Closing per comment #2 - let's reopen if we see this again. :-)