Automation curve should interpolate between last point of the pattern and next automation point.
It’s just plain stupid it’s not possible to automate the area between last line and first line of the next pattern or make a curve that covers multiple patterns with only two points.
I’m sure this must of been discussed loads of times but my thoughts are the automation window could have a selector for either “Pattern” or “Song”. If “Song” is selected it will either show all the tracks automation or just the patterns that have been hi-lighted in the pattern sequencer.