I looked in the database and I don't think I seen this issue. I'm on R06d, with new translation turned on and during Reunion installation I'm pretty sure I checkmarked all options, I'm using all default names for my chars.
After you try and get on Airship after Icicle area right before Diamond Weapon attacks Midgar Cait Sith's dialogue is messed up a couple times. Then after Diamond Weapon attacks Midgar and they fire cannon at Sephiroths Cave, Cait Sith's dialogue is messed up at multiple points and then after Barret says "You're with Shin-Ra, ain't ya? So, why the hell not!?" after Cait Sith starts sulking no matter what I hit on controller or keyboard I can't advance past it (your speed up function still works during that point though) have to disable new translation to get past. I can't tell if anything else after that was busted with new translation during those scenes as I kept it off until I got into Midgar. Here's a video of his messed up dialogues/what it looks like without new translation + save files if needed.
https://www.youtube.com/watch?v=27RFEEWx3AESave File 07, just get on Airship and you should see first couple messed up dialogues:
https://drive.google.com/file/d/1w6XMSaB6K20tphxrKWidQTonxJ77BjJP/viewSave File 02, get on airship and fly towards Sephiroths Cave and cutscenes will trigger so you should be able to see it:
https://drive.google.com/file/d/1T46X62oGwMNGPSrBB6ytM8SplQo0VekJ/view