在Ubuntu 18.04中打开SimpleScreenRecorder后，我立即获得标准输入对话框。一旦我选择“记录一个固定的矩形”的径向按钮，我的屏幕就会被这个稳定的蓝色框覆盖，直到我退出SimpleScreenRecorder时，框才会消失。
I get it this a preview of the area that's going to be recorded. But it's on top of everything, is not transparent, and I can't see what I'm doing. It obscures SimpleScreenRecorder's own input dialog. I can hit TAB and guess where the cursor is to change settings. But this is maddening.
关闭此蓝色框或使其透明或类似。怎么样？？？
