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Description of problem: ESR52 crashes when you right click on seemingly any web page. 

Version-Release number of selected component: firefox-52.0-0.11.el7_3.ppc64.rpm

Steps to Reproduce:
1. Open a webpage in FF52.
2. Right click on a "blank" portion of the page.

Actual results: Firefox crashes.

Expected results: No crash.

Additional info: This came about when testing the context menu that appears from right clicking. You are able to navigate back, forward, refresh and bookmark a page within the right-click context menu. Doesn't appear on ppc64le.

Also occurring on s390x.

Created attachment 1256457 [details]
backtrace

*** Bug 1423011 has been marked as a duplicate of this bug. ***

Created attachment 1260558 [details]
ff segfault on start bt

Unfortunately we've got another SIGSEGV right after start on ppc64. BT attached.

firefox-52.0-4.el7_3

(In reply to Tomas Pelka from comment #6)
> Created attachment 1260558 [details]
> ff segfault on start bt
> 
> Unfortunately we've got another SIGSEGV right after start on ppc64. BT
> attached.

Moving to separated bz (https://bugzilla.redhat.com/show_bug.cgi?id=1429837) per stransky request.

This issue was dropped from erratum, does it mean it is not fixed?

It's already fixed.

Created attachment 1390025 [details]
patch