So, there are a few references I've found related to "text disappearing", however any of the recent (< 2 yrs old) ones are buried inside threads with other main titles and/or are themselves several months old.
I'm getting similar behavior as the other reports: after some time, all text from the GUI will stop displaying. Buttons shapes, icons, etc... will all still be there, just the text on each is gone. This seems to happen after the unit comes out of suspend for me, but I can't confirm that's the only time it happens. I may have had the first instance be after I stooped a video playback. A reboot fixes it.
I've seen reports for a few a couple of different KODI versions on several Intel NUC users and at least one Chromebox. I'm running LE 9.6.2 on an ASUS Chromebox CN60 (Haswell) connected via HDMI.
There seems to be a couple of trains of thought:
1) Some sort of custom EDID configuration... but that seems to have been problematic for a few folks, and it seems odd that only text (and not the rest of the display elements) would go away if the unit didn't like the EDID it got back from the display
2) Changing the default font for the UI to Ariel.
The latter seems like an easy test and/or fix, but thought I'd throw it out here for any other thoughts/ideas.
Thanks.
-Steve