I created a backup of the a project where these problems occur and have provided a link below. The bugs don't just appear in this project though.
https://drive.google.com/drive/folders/1L6knWFMUZ0_dh-AzAk01wXHSAd1BGrM4?usp=sharing
After emailing with support, I was told the problems are from using split screen and was given the following instructions
"1. Upload the files you want to insert into your video (2,3,4...)2. Add each file to a separate video track in the timeline (video track 1, video track 2, etc.)3. Select the video/picture from the video track, right-click and select the Effects4. Click on the Plus button on the upper right and select the Split Screen effect5. Select the desired greed from the drop-down menu and select the field (A, B, C, D, etc.)6. Repeat the process for each file from the rest of the video track"
After following the instructions, the bugs definitely appear less frequently but I find that the program feels sluggish when using the split screen effect even though my system resources are not being taxed.