58.0a1 (2017-11-05) (64-bit) Mac OS X My profile is stacked, full of extensions and 300+ tabs, but this particular jank really stood out. STR: 1. open new window 2. immediately start typing into location bar Profile: https://perfht.ml/2iAYjID
Yikes. >1s blocking in content process from chrome://testpilot-addon-scripts/content/frame-script.js
Most of the jank seems to be related to extensions, nothing to do for the Address Bar. To be clear, we are aware of a couple perf problems in the Address Bar and actively working on those, but it's not this case. I'm moving to WebEx for now.
Based on comment 1 this sounds like a test pilot issue, those are tracked on github, please file it there: https://github.com/mozilla/testpilot/issues/new