[Affected versions]: Latest Nightly 61.0a1, Build ID: 20180410100115 [Affected Platforms]: Windows 10 x64; Intel Mac OS X 10.13 [Prerequisites]: - Accesibility tab is opened and enabled [Steps to reproduce]: 1. Select any row from Role, Name or Properties column 2. Click and drag the arrow pointer on a different item's text 3. Release the click button [Expected result]: 1. The entire row where the dragging process tooks place should be highlighted. 2. The previous selected row should be un-selected. [Actual result]: 1. The row where the characters where highlighted is not selected after releasing the click button. 2. The previous selected row is still highlighted [Note] The issue could be reproduced in all the mentioned panels on Window 7 x64, however on Intel Mac OS X 10.13 is reproducible only in the Role panel.