Text Shaping Method: Full Shaping Bug?

I want to add symbols into my project (UE5.1) for UMG widgets and stumbled upon the Google Icon library (references below). They work great by using a text widget and changing to the selected font (e.g., *.ttf from github) and then typing in the name of the symbol. However, you must change the Text Shaping Method to Full Shaping to get the icon to appear.

Now the issue comes from when packaged the built program doesn’t respect Full Shaping it seems and the icons are now text instead of icons (they are still of the selected font style - i.e., it doesn’t appear to be an issue in finding the .ttf).

So the question, is this a bug? Is there a way to get the icons to be present in the packaged project?

Searchable format

Github

Edit: OOooo I forgot to mention I am packaging for HoloLens… Perhaps that is the offender? Packaging for Windows and remoting to the HoloLens seems to retain the icons as expected… ugh!