[Bug 225233] www/firefox 58.0 hangs on some requests

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=225233

--- Comment #3 from Graham Perrin <grahamperrin at gmail.com> ---
(In reply to aryeh.friedman from comment #0)

> … an intermittent issue but happens about 10% of the time.

Maybe less than five percent in my case. It's amongst the issues that cause me
to hesitate before switching (from Waterfox) to Firefox. 

First noticed months ago. I have a vague recollection that it began at or
around the time of Firefox Quantum; 57. 

If the issue had been noticeable with Firefox 56.0.2 or less, I'd almost
certainly have a clearer memory of it. NB all my production (non-test) uses of
56.0.2 and less had e10s disabled, which makes me wonder … 

… whether this bug 225233 will be reproducible only with e10s enabled.

----

In the most recent incident, this morning, I used a first instance of Firefox,
in safe mode, to create a new profile, then launch the new profile in a new
browser in normal mode. 

Result: 

- neither of the initial tabs (welcome, privacy notice) loaded

- the third tab (a pasted URL) did load, without difficulty. 

To follow: 

- screenshots

- the profile, and the cache directory. 

When there's nothing more than a spinning asynchronous progress indicator: 

- I know (from experience) to not bother with a reload

- I'll get the content to load only if I copy the address, 
  then go there in a new tab. 

----

$ pkg info firefox | grep Version
Version        : 61.0.1_1,1
$ date ; uname -v
Sun 15 Jul 2018 13:35:22 BST
FreeBSD 12.0-CURRENT #7 r336136: Tue Jul 10 03:01:24 BST 2018    
root at momh167-gjp4-hpelitebook8570p-freebsd:/usr/obj/usr/src/amd64.amd64/sys/GENERIC

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