Dreamweaver CS5/CS4 stop working CTRL+C, CTRL+V, CTRL+X?

Punto switcher do not use? I've had glitches with it.
However, I didn't fight — I moved to phpStorm.

Punto Switcher doesn't spoil anything. Problem to be solved.

So, I got rid of the problem by creating in the first tab a file with visual Soderini (in my case it was a page of "html"). Let it be empty.
Next, I opened the necessary documents, and alt+shift (change language) is not interrupted.
\r
Don't want to understand why this is so, no time for that, but if someone can help I'll be happy.