How to remove OUTPUT MSG dialog box

I am running paraview on wsl ubuntu. I am trying to close the dialog box of output msgs but just to fail. ‘X’ button does not work nor does clear no anything. Why is it so? How to resolve it?

Strange. Seems like some kind of event might not be getting through? Can you try docking it in the window and then closing it? You might also be able to turn it off via either the View or Window menu (I can’t remember which off-hand).