On Sun, Sep 03, 2017 at 12:40:04PM -0400, Dustin Mitchell wrote:
I just reproduced it with a random page from my history: https://github.com/taskcluster/taskcluster-cli/issues/49. Any github page will do, and it seems to have to do with caching. if I delete today's history, I can reproduce. And with a repro recipe, I can capture a profile -- https://perfht.ml/2wxZIpP
Interesting. The first layout flush here is happening when we focus an autofocus form field. I'd be surprised if anything about that changed recently, but it does seem like something that should wait until after the first layout flush.
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