Thanks for reporting the issue.
Can you share the sample files with which you are facing the issue?
Are there any specific softwares installed on your system?
You can mail me the files and information at email@example.com
Has this ever been resolved as we are having the same issues.
Cleaning font caches can resolve this, but we're looking for a more robust solution (one of which indesign does without us having to worry about missing it).
It doesn't happen all the time and is very hard to replicate (as the thread suggests). It happens in CC2017 and CC2018 (as well as others reading other forums). The file is not the issue as when the problem occurs, we open the file on another mac and it is fine.
It happens with various fonts, Avenir, Camphor, Myriad Pro so far we've had issues with.
We run a mac environment, not all of the macs show the problem (even though they use the same fonts and versions of indesign and OS), it's confined to only a few of them.
Is there any resolution to this?