> On Aug 31, 2017, at 1:08 PM, Boris Zbarsky <[email protected]> wrote:
> 
> The symptoms you observe sound like (A) is happening, possible from an 
> extension or our browser UI...  If you have a link to a specific url that 
> reproduces for you, especially in a clean profile, that would be pretty 
> useful.  This is usually pretty simple to debug when (A) happens: set a 
> breakpoint on when we start layout and see what the JS stack is. The hard 
> part is catching it happening.
I’ve seen this behavior too on OSX.  I did a restart with all add-ons disabled 
and could not reproduce.  Restarted with all add-ons on, and can reproduce.  I 
narrowed it down to Ghostery.  If I disable Ghostery, it no long appears to 
happen for me.  YMMV.

-Michael.

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