On my side, it only happened when I tried to do some corrections in a score, not from a blank measure...

Here is how I did it: In Simple Entry input 4 quarter notes hi alt-[numpad]-9 and put 3 eight notes (in the place of) 2 eight notes (that was my default setting) you get a quarter note and an eight...

Figured out what you wrote in the previous post, to get this... Still a bug, I guess!!! Look at the jpeg

After 3 quarter notes, if I hit 9, I get 1 rest, an eighth note rest, and an extra beat remaining to input notes... Can you be more precise so I can try to reproduce the bug? Thanks...

I know how to insert triplets. The proof, look at my jpeg. I started from a new score. Now, why can't I do the same in my main score? I deleted everything in the measure. This way I can be sure there...