Clip boundaries -> Split not working

Hello - I am having the same problem. No matter what I try, I am unable to split the track and insert additional audio. I realize I’m supposed to hit stop so the different functions work. However, whenever I hit stop, the cursor keeps jumping off the screen back to the start of the audio…This is extremely frustrating. I have an audio that I am trying to complete and unable to do so. I am using windows 10 and I have audacity version 2.4.2. Does anyone have a solution to this, I don’t understand why such a simple function is so difficult. I posted a loom video so you can what’s happening…Thanks for any help from the thread.

https://www.loom.com/share/e0d87ed42a774b55a7ed526a29661483