promidi
Multi track select using the method you describe works fine here. Can you describe what your cursor changes into?
When holding "Control" and selecting another track (in track view) the cursor changes to the slip editing tool.
The Tool where you can grab the end of a waveform and slip edit it.
It doesn't actually do any slip editing though in this mode. It still multi-tracks selects as it should.
Didn't have problem this with previous version.
Tried it on different songs and the problem is always there.
I'll try reverting back to previous Sonar version when I get a minute to see if it does it there.