A Revolution in Education
I don't know if this will help but...
That big white arrow is one of the SMART tools used to point something out. I have a feeling either one of the rocker buttons on your AirLiner or (more specifically) one of the invisible floating tools on your AirLiner (on the right, called the icon strip) is causing the problem.
You might want to disable the tool. I think there are other ways out of it, but I dont have my work laptop here to check for you.
But if you go into SMART Control Panel, I believe you will find the Icon Strip settings somewhere under the Hardware Settings (you will need your AirLiner connected for this).
You should see the /\ big arrow in the list of icon strip items. Just remove it from the list and replace it with something else (if you use your icon strip items).
I hope it helps,