I've tried the Pause key which used to fix this issue but for unknown reasons it's not having any affect this time. I tried closing the file, then I tried exiting Sonar but to no avail. Anyone? Sonar 8.5.3
 
Thanks - rev

Hi. Perhaps Scroll Lock?
All the best.

Just noticed that this was regarding 8.5, so might not be relevant...
 

Pretty sure it was the same back then Ken.
 
revnice have you made any changes to your system recently, like graphics card/drivers?
 
I seem to remember a similar problem with 8.5 and emptying the picture cache cleared it up

Scroll Lock is the same key on my keyboard as Pause so no joy there.
 
No changes to my system, this problem occurs when I have two files open at once. I'm not sure what operation actually causes it to change behavior but I can usually reset it using the Pause key, which is the 'official' fix. I've tried deleting aud.ini but that didn't work either. I've yet to try a reboot though.
 
Reboot worked so all is well again...
 
rev