Damn I was able to reproduce it but the video messed up. I tried it again and now it's deleting all the clips fine. I keep trying to recreate the bug but it's not doing it anymore. I know the problem is there because it's been happening since I've been using this program. I'll post a video if I can recreate the bug.
I use shift key to select a large amount of clips to delete. When I press delete it never deletes all the clips I selected. It only seems to delete like 50 clips at a time. This is annoying because I have to keep re-selecting the clips I want to delete. Why does it do this and how can I fix it?