I'm using the LetterOfIntent_Full.mp3 from the audio library in Camtasia and have stretched it out to 03:08.
At 01:55, for some reason, there is an audio point which I didn't create and which I can't remove. I've tried right-click / remove-audio-point but it doesn't disappear.

If I choose "remove all audio points" the volume changes back to normal, all other audio points are removed, but this one at 01:55 is put back in:

How can I remove this audio point at 01:55?