Hello,
Can you tell me something about program window flickering?
I've sent to you, with the beta version, not, the 12 final is out, but the editor window is still flickering, while I'm typing.
Now, the situation is worse, because not the program window, but a small command window, with 4-5 lines of text, is flickering.
This is nasty, please, correct it!

I don't see any flickering in any window. Can you go to Help > Support Info, press the 'Copy all pages' button on this info screen, and paste this text into an e-mail reply?

the flickering is present on my side too. not noticed it till not seen the bugreport, but now its unpleasant, i agree

I have sent my support info page to your email address.
I tried to copy a large text into an SQL Window. No flickering.
When I change this window into command, it flickers, when I press any button (for example I write spaces to a line).