Ok, so these aren't problems with the tool necessarily.
The first issue is an issue with WinForms it seems. Try not opening the drop down. Just select the text instead, and type. That should fix that problem.
The second issue is a problem with how you repointed the movesets. You overwrote the FF FF terminating bytes that terminate the movesets. That means it doesn't have a way to terminate reading moves until after the second table. Where is Drapion's table located at? I'll walk you through fixing it.