Dear Adobe support,

There've been numerous bug reports on very similar font issues like mine in the past, but this bug here can be reproduced so easily, that I need to get the word out to you.

Bug Description:

I'm running a windows 10 pro x64 machine with InDesign CC (17.0.1 x64) to create pdfs. For viewing I rely on Acrobat Pro DC (2021.011.20039), but I keep getting this bug constantly (even with the standard Reader and on Mac!).

The important point now is the use of the font style called Rubik Light, because every single time I make use of it I get the same error (Did a test series on that). I installed this font style (.ttf) from two different sources (Google Fonts & GitHub), but it didn't make any difference at all.

Displaying such pdfs in browsers like Chrome or Firefox however works just fine. Please help me with this.

Kind regards
Sebastian