Can't move second to last frame in videos to the left

I have always had this problem, that I can’t move the second to the last frame in the videos to the left, to an earlier point in video. Whenever I try to move it to the left, it goes to the right. Does this happen to others? I have tried to work around it but wanted to finally ask about it. I have shown the timeline below with the penultimate frame circled.

Enscape release a broken video editor more than a year ago. There have been numerous complaints about it, but it was never fixed. The below is one of the threads.

RE: Video editor 2nd to last keyframe change keeps shifting video duration

Thanks so much for letting me know about this.