BR: Automation curve display has a weird annoying bug

[fromwithin]

This will be a bit awkward to describe, so here's a sequence of events to show it.

1. Create a new edit.
2. Go to the automation A on Track 1 and choose 'Automatable parameters for this track -> Volume & Pan Plugin -> Volume'.
3. Add some points to the volume curve in Track 1 (it doesn't matter how many).
4. Go to the automation A on Track 2 and choose 'Automatable parameters for this track -> Volume & Pan Plugin -> Volume'.
5. Add some points to the volume curve in Track 2 (it doesn't matter how many).
6. Go back to the automation A on track 2 and choose 'Hide automation curves on this track'
7. Click on the automation curve in track 1. Click the curve itself, not one of the points.
8. Go down to the properties panel and click a drag on 'Displace curve' or 'Scale curve'.
9. Pop! The automation curve in Track 2 appears again!
10. It gets better (i.e. worse)...
11. Go to the automation A on track 1 and choose 'Hide automation curves on this track'
12. Add another point into the curve that is still visible on Track 2.
13. Go to the automation A on track 2 and choose 'Hide automation curves on this track'
14. Go to the automation A on Track 1 and choose 'Active parameter curves for this track -> Track1 >> Volume & Pan Plugin >> Volume'.
15. Click on the automation curve in track 1. Click the curve itself, not one of the points.
16. Go down to the properties panel and click a drag on 'Displace curve' or 'Scale curve'.
17. Poof! Track 1's curve disappears and Track 2's appears again.