Re: Firefox and Cliqz tabs crashing at GOV.UK government pages

On Sat, 11 Apr 2020 11:01:52 +0200
Gary Jennejohn <gljennjohn_at_gmail.com> wrote:

> On Sat, 11 Apr 2020 09:49:09 +0300
> Alexandr Krivulya <shuriku_at_shurik.kiev.ua> wrote:
> 
> > 11.04.20 03:34, Graham Perrin __________:  
> > > On 08/04/2020 20:23, Graham Perrin wrote:
> > >    
> > > > Firefox 75.0_1,1 tabs crashing or mis-rendering at some www.gov.uk     
> > > pages    
> > > >
> > > > Most noticeable today at <https://www.gov.uk/coronavirus>.     
> > > Screenshots available on request.    
> > > >
> > > > AFAICT the same types of problem with 75.0_1,1 on both r357746 and     
> > > r359628.
> > >
> > > The problem persists with r359750, is reproducible with a different 
> > > user account, is reproducible with Cliqz browser. As far as I can 
> > > tell, only bugging UK.GOV government pages.
> > >
> > > Occasionally a page will appear OK (e.g. the screen to the left at 
> > > <https://i.imgur.com/ROO9FIN.png>), more often the page will appear 
> > > wrong (screen to the right, safe mode).
> > >
> > > Most often: the tab will crash before the screen can be read. Crashes 
> > > seem to occur at load time, towards the tail end of content loading or 
> > > rendering.
> > >    
> > 
> > I can't reproduce it on my current (r359770, amd64, firefox-75.0_1,1), 
> > this page loads fine, no any mis-rendering or crashing.
> >  
> 
> https://www.gov.uk/coronavirus works with r359798 also, of course.
> 
> I tried it with r359740 using firefox with a java script blocker installed.  The
> site displayed just fine and only complained about cookies.  As soon as I
> enabled any one of the two blocked java scripts the tab crashed. Seems
> like the site is using some weird java scripts which tickle a bug in
> older versions (< r359770) of FreeBSD.
> 

Update - it turns out that I didn't wait long enough.  The firefox tab
still crashes after a few minutes.  So I guess there really is a problem
with firefox.

seamonkey sometimes crashes and sometimes works.  That's weird.

-- 
Gary Jennejohn