I have a clip in the timeline on V1 and audio on a1a2.
I open a shot into the viewer and mark up a split edit, audio in first, video in later, video out, and then audio out later still.
I reset the destination tracks in the sequence to V1 and a3a4.
I drag the clip to the timeline with snapping active. I butt the video portion of the clip against the video in the timeline. The outline displays correctly with the split audio on a3a4.
I drop the clip and it shoots off down the timeline, butt the split audio to the end of the video portion of the clip, though it does put the material on the correct tracks.
This does not happen in v3.0.4, where the clip is placed correctly, butted against the other clip in the timeline with the audio portion overlapping on a3a4.
All the best,
Tom