When taking a screenshot, for example using fullscreen or rectangular region, there is no mWindowTitle. Hence the title is Null. Removing separators when title is Null, removes the required separator set in 'Filename'.
When taking a screenshot, for example using fullscreen or rectangular region, there is no mWindowTitle. Hence the title is Null. Removing separators when title is Null, removes the required separator set in 'Filename'.