ADE not displaying fonts correctly in Windows

[#1]

Holy crap, this is driving me insane.

https://indd.adobe.com/view/9d7d32ec-76da-4ab3-8e47-2f8ebb250f3d

Dropbox - ePub Windows Test.epub

The ePub3 FXL works perfectly on iOS and Mac (iBooks).

On Windows, ADE shows the fonts as either Times or Ariel, but the animation works.

Readium/Chrome shows the fonts correctly, but no animation.

MS Edge just shows a static red square.

If all I can use is iBooks, I might as well use iBooks Author!

The ePub was created with Windows INDD CC 2018 using Webkit fonts.

[#2]

Yep, they still haven't fixed it, apparently.