VMware technical support has been, shall we say, less than stellar. I wrote in the case that this is happening on multiple machines, 6.0, 6.5, flash web client, HTML5 client, Chrome, IE, Edge... the first thing the rep asked me is if I tried Firefox. Then he asked for vCenter logs, which is a standard stall tactic for support. In the latest reply I received he told me that it's a known issue in Chrome but it "should work" in IE and asked me to downgrade the version of IE on my Windows 10 machine.
I wrote up a detailed post in the HTML5 fling community/feedback page 3 days ago and have yet to receive a response. I just replied to the engineer who owns my support case asking him to escalate it to another engineer. I'm expecting a response on or around the 4th of never.