I had saved a User preset in SC3 Standalone, then opened it in Live. I was able to repeatedly crash Live by opening the preset, then navigating to the Arrange Tab and trying to lasso-select chords in the main track from right to left.
This bug is repeatable in SC3 Standalone. After testing, it only happens dragging from right to left and only on the Arrange Tab.
And after a few reboots of SC3 Standalone using the same User Preset, the following behaviour occurred where there were not chord note tools available. Despite a similar number of reboots in Live, this behaviour did not occur in the VST.