1. An explanation of the bug
Several times toward the end of disc 2, Cait Sith's dialogue is blank on the Highwind after the reveal. The one following Barret's "You're with Shin-Ra ain't ya? So, why the hell not!?" is the one that is the problem. The pressing O to advance the dialogue does nothing.
2. Does the bug happen at same point more than once?
It happened the initial time, then again with a soft reset of the game using the shortcut, then again with a hard reset of the game (closing it and re-launching it)
3. App.log (found in root folder)
https://drive.google.com/open?id=1Z8xORwPrBG2wP4rs9DvNBKGkI0YcRKaJ4. Reunion.log (found in The_Reunion folder)
https://drive.google.com/open?id=1AXYRubKJS602S7C05zVsWTnCX2Tip9En6. Your save file from just before the crash or hang
https://drive.google.com/open?id=1epRViJJ6xNLsDtTh_b_GkeG1pkxLOFNT7. Audio.log (found in The_Reunion folder)
https://drive.google.com/open?id=1kcVgLO5tAcJ0zS_9qDOe8ZhJx6EE-GI48. Your CPU spec
Ryzen 5 3600
9. Your operating system
Windows 10 Build 18363.778

First post on this site. Just wanna say I've really enjoyed the work done with Reunion. First time fully playing FFVII. I hope this can be fixed easily. I was hoping to finish the game this week. I was streaming when this happened so if you need to see it in video form, just message me I guess. Thanks for all the hard work!