Problem With Green Textbox

Hello folks,Following problem occurs:First I'm flying with the PMDG 737, FS2Crew, FS Meteo, Active Camera and RC last version, and always flying in VC.Now for the first time I have checked the option to see textdisplay. (So I have not to write seperatly all the messages on paper)But now, by every text which is coming up - the controller tells his/her message and afterthen the text is displaying in the green box. So far so good I think.But the last character (word or number) which is displayed stays on the left side in the green box and don't disappear.So the green box stays on the screen with the last item untill a new message is coming up.I think this is not the way it should be.I hope my problem is clear because my english is not so good. Maybe has someone a solution for this.Thanks in advance and a very happy new (sim)year