Cinematic mode videos from iPhone over-exposed

Hello! I noticed that when I upload videos shot in cinematic mode or action mode on iPhone to Premier Rush and then export them with Automatic export settings, those videos become over-exposed (the weird thing is that they switch to this over-exposure maybe a second into the clip). I noticed that if I uncheck the Action Mode Lower Light under Record Video settings on iPhone and make sure that I preserve that setting under Preserve Settings, I fixed this problem. Also, for videos that were already shot without these settings set as described, if I exported my project from Premier Rush with 4k 30fps setting (while the videos were shot under 4k 60fps), I could also avoid this problem.

However, in my recent project, two of my videos shot under cinematic mode and with the appropriate settings on the iPhone, they become over-exposed. I tried choosing the 4k 30fps option under export, but it didn't help. I noticed that the Frame Rate under it export settings in Premier Rush is showing "30", which would make sense, if it wasn't showing "29.99" or something like that before and then things worked fine.

If you can provide any assistance, I would greatly appreciate it! Thanks!