Hello.
I thought I posted on this thread...
I too have had this behavior...and It was set to manual scans...but some of my plug ins did not show up...So, I manually scanned for vsts...and after pressing the button, the scanner scanned and rescanned, and scanned and re rescanned while while rescanning, closing the scanner, did not solve the rescanning of those files...I had to close up sonar, and reopen it to stop the scanning....
Well, I cannot say if I have my PC over Tweaked or something else outside of sonar set up wrongly for it to perform in this manner....But I think something is odd with it,....
Sorry no solution here in turning it to manual...But I am sure it is not supposed to function as it did for me...and as it seems to for you...
So now there are more than one experiencing the problem....interesting.
Sir Les