Chapters Inconsistently MIssing



Hello,
     This is my second post so apologies if I am overlooking something obvious. I am using a Fire Stick 4k. I updated today to the daily build for Build 21.0 (21.0.1) compiled 2924-08-16. I didn’t take note of the previous build, but it was a daily build from about 2 months ago.

     I have noticed that all chapter markers are missing from some but not all of my Movies. My TV Shows do not seem to be effected. In every case I have identified so far, the chapters are working correctly in VLC, and I do see the chapters listed in Media Info, but KODI is treating the movie as one big chapter with a 20 minute big skip instead of advancing to the next chapter. I assume I will need to produce a log of some type to get the ball rolling but I don’t know where to begin. Thanks for reviewing this.