Packaged projects do not render in web page using Safari 10.0

My Macbook Pro uses an Nvidia GeForce 750M and was on Safari 10.0 when this occurred.

This did NOT occur on a Macbook Pro with the same card and using Safari 9.1.2. This did NOT occur on an iMac with an AMD card and using Safari 10.0.

This did NOT occur using Firefox.

When using the fullscreen option I was able to have the project render, but exiting fullscreen into the web page view had the project render as a black screen again.

Repro:

1. Create a new Blueprint project
2. Set the build configuration to Shipping or Development via File > Package Project > Build Configuration
3. Select File > Package Project > HTML5
4. Open the packaged files and run the RunMacHTML5LaunchHelper.command script
5. Open Safari and enter [Link Removed] in the address bar
6. Click the hyperlink for <projectname>HTML5-<buildtype>.html

Result:
Project loads to a black window.

Expected Result:
Project loads and window in web page.

Frequency:
3/3