"Text animation vertical with no filter" doesn't work correctly in Edge browser

The new IE Edge browser that comes as a default with Windows 10 does not display the following portfolio style correctly: “Text animation vertical with no filter”.
For example use the Edge browser to go your demo site at https://themes.ishyoboy.com/boldial/portfolios/zoom/ and hover over the first demo portfolio. You’ll see that by hovering a portfolio item the underlaying layer gets displayed first below the actual portfolio.

How do I fix this on my own site? I have the latest version of the theme, updated 26th of August 2015.