Yeah, I'm considering packing it into a video file in the future, but still, it plays smooth
Using windows 10 and by right clicking, I mean you right click in the "timeline" to bring up a small dropdown menu where you can edit the frame i.e. put actions or sounds into it etc..
On the added image I had first left clicked frame 207 and then right clicked it to bring up the menu, and on the "right click" the black dot jumped back to frame 62. It's pretty strange..