2018 Beta3 and Pre1

"Browse" dialog in Branch window stops all interaction with other windows of PDM.  It looks like "ViewServer.exe" stops responding when the Browse dialog is opened from Branch.

See video

https://drive.google.com/file/d/0B9mUyKSrablUNGdUeHMtRTFDZVk/view?usp=sharing

-Sylvain