Do you happen have a link to your post?
I never use the lower zone. Are you able to duplicate the OPs issue with 2 editors on the same screen? He says “on a 2nd monitor” in the link I posted, but I don’t think that matters. However, I may not completely understand the issue.
I did replicate what I think he has addressed, but not positive. And according to @mlib, it appears to be a issue that has never been addressed.
If anyone wants more mileage with this issue, he or someone needs to create a step-by-step reproduction without leaving anything to question, and include @mlib post. As said, I believe I understood, but it would help with a step-by-step reproduction to clarify any misunderstanding. For example, remove conditions such as “a second monitor” that I don’t believe have any bearing on the issue.
When you have a track in focus on the track list, does it matter if that part needs to reside on that focused particular track or can any track be in focus while you click on parts from other tracks? Again a repro would help here IMO.
A reproduction will also make it easier for more users as well as testers to chime in without all the guessing. If you want Steinbergs attention, I assure you this is the best method.
I guess I’m trying to figure out your ultimate objective. What you are saying is that as it stands, the Drum editor does not open on subsequent openings, even though you have a drum map assigned in the Inspector. You are keeping both Drum and Key Editors open. On subsequent openings it opens the Key Editor?
Before any KC press (even if Cubase macros had pauses) you need track focus on the track list in the Arrange Page, to determine what you are opening. The track either has a drum map or does not. And if focused on a track with a drum map, and assuming that is checked in the preferences, it should open the drum editor every time.
My suggestion of using Metagrid was to achieve what I think is your ultimate objective. Viewing 2 different editors, one on top of the other on a 2nd monitor (but now I think a 2nd monitor is not relevant to the issue) Then with both drum editor and key editor open, using a KC to focus which one is viewable assuming both editors are stacked on top of each other.