[Affected versions]: - Nightly Try build (2018-02-13) [Affected Platforms]: - All Windows - All Mac - All Linux [Prerequisites]: - Have the latest try build 60.0a1 from (2018-02-13) installed. - Accessibility tab is enabled. [Steps to reproduce]: 1. Navigate to any website press the "F12" key and click the "Accessibility" tab. 2. Open a new tab and navigate to another website. 3. Right click on a element from the page. 4. Click the "Inspect Accessibility" option from context menu. 5. Observe the behavior. [Expected Results]: - The "Accessibility" tab is opened and the corresponding object is focused. [Actual results]: - The "Accessibility" tab is opened but the "document:" tree is not extended, therefore the corresponding object is not focused. [Notes]: - The issue is not reproducible if the Web Console is opened (see this video: https://goo.gl/tp8vDE). - Attached a screen recording with the issue.

Will be fixed in next try build.

I have retested this issue on the latest Nightly try build (2018-03-12) and the issue is no longer reproducible. Tested on Windows 7 x64, Mac Os 10.12 and Arch Linux.