1. Sound goes out when using certain synths (KLC, Zeta) - You have to toggle a (any) synth in the synth rack to get the sound back, and it only lasts for a few minutes, then goes out again - the only 'resolution' is to freeze track and delete synth - which kills workflow
2. Dragging loops into Sonar is hit and miss. if it hits, life is good, if it misses, dragging loops of any size and/or format will cause Sonar to Crash
3. There is still that 'bug' in the Plugin Manager, which malfunctions whenever you try to select more than one VST/VSTi/Dx/DXI/MFX plugin to move around in the creation box.