[Affected versions]: - Nightly 59.0a1 (2018-01-05) try build [Affected Platforms]: - All Windows - All Mac - All Linux [Prerequisites]: - Have the latest try build 59.0a1 from (2018-01-05) installed. - The "Accessibility" option is checked in "Toolbar Options" [Steps to reproduce]: 1. Open the Nightly try build with the profile from prerequisites. 2. Navigate to any website press the "F12" key and click the "Accessibility" tab. 3. Click the "Enable Accessibility Features" button. 4. Open a new tab and navigate to another website. 5. Press "F12" key and click the "Disable" button from "Accessibility" tab. 6. Return to the previously tab from step 2. 7. Extend the "document" item and observe the behavior. [Expected Results]: - The "document" is correctly extended. [Actual results]: - The "document" is cannot be extended. [Notes]: - Attaching a screen recording with the issue.

Hi Cosmin, is this one still an issue with the latest builds?

This issue is no longer reproducible on the latest Nightly try build, but I have observed a similar behavior. In order to be easier to track I have logged a different one: bug 1437527.