QuickTime frame controls unable to function on lion

[Bengal Tiger]

I play the video using QuickTime in my lion. But the fact that I can’t access any of the frame controls.. I can’t even minimize, maximize the window. Nor can close and drag it. When I am trying to click any of the controls it brings the finder in the foreground. There after the QuickTime will not respond to any of the any further mouse. I tried with uninstalling the stuffs like Perian and Flip4Mac but the result was the same, please help?

[Phalguni88]

This problem is same as mine. To disable the round corner in the QuickTime there are terminal commands back in your snow leopard. I have set it to default then unresponsive controls were fixed.
Then I have copied the things inside the quotes (without quotes) and past in terminal and then pressed return.
"Defaults write com.apple.QuickTimePlayerX MGCinematicWindowDebugForceNoRoundedCorners 0".

[Addison]

I have downloaded the Lion beta version. After that under the QuickTime section there is ‘parameters’. In parameters there is a button ‘restore default’. Then i can restore the default. After changing these I can grab all the frames as I was to before.