.vbs script collapses after several. seconds, what could be the problem?

Question

VBScript

Beginning. Trained in creating the simplest vbs scripts.
After creating a script like do ... loop with msgbox inside,

the code

do
MsgBox "Рукалицо.jpg?",0,"Ну да"
loop

on the "good" advice of friends, I pressed Enter and the window really closed.
But since then, any vbs scripts (we are talking about the simplest ones, I’m far from complex ones) behave rather strangely with msgbox: several times will hang. seconds window with text and buttons, and then disappears by itself. I don’t do anything with the mouse or keyboard, it’s on its own.
A small video of how this happens can be seen at the link: here .
Reboot did not change the situation.
Windows 7 Pro.
What could it be and how to fix it?