Problems with System 3 Application

This is the second big problem that I’ve encountered with this application (first problem and the one that i still didn’t solve is in this topic ACME System 3 error ).

This System 3 application has some problems with “Double click” activity in a sense that when I use it blocks the application (the screen freezes and I need to go to task manager to close it)

This is one example.

Can anyone please help me out with this, this application is perfect for testing some stuff out and it would be a shame to stop using it because it is simply not working.

Link for System 3 application >>