Hi @artemt1987.
I think we are only waiting for the next release of the "Arduino Mbed OS Giga Boards" platform to be made. I don't have any information about the scheduling of that release though.
You could try using the Arduino IDE Library Manager to update the library to 8.4.0. I mentioned "8.3.11" specifically in my instructions above, but the intention was only to install the newest version in the library's 8.x version series. You should be able to use any version of the library >=8.3.5 and <9.0.0.
I don't have any specific reason to think that updating the library to 8.4.0 will fix the problem you are having. I don't see any specific mention of fonts in the changelog:
https://github.com/lvgl/lvgl/blob/release/v8.4/docs/CHANGELOG.md#changelog
But it is easy enough to do an update, and you can always downgrade the library back to 8.3.11 just as easily later if there is a problem so I think it is worth a try at least.