I'm also having this issue. Here's a video of the issue in action. I wasn't sure if I should start a new topic or add on to this one. I'll be happy to start a new one if that's preferred. Specs: Windows 7 Professional Intel Core i7 32 GB of RAM 64-bit OS The video shows this issue occurring in Chrome Version 56.0.2924.87 but the issue is also reproducible for me in Firefox 49.0.1