Would you have a PG to share? Even just a simplified version? I believe your issue does come from the way you are handling cameras and layerMask. I also think this is totally achievable (but without the PG, I would need to reproduce it from scratch and I don’t really feel like it (sry).
I can however make a couple of assumptions for your issues:
Likely because it is expressed in percentage mode. When you resize your ADT to 50% of the width, controls are resized to the size of the container
Likely a layerMask and/or camera order issue.
Same as above. Although it could also be a pointerBlocker issue. Depends on how your ADT is built.
Again, layerMasks and camera controls are key here…
Edit: I fixed something similar just lately, may be it can help (else, as I said, give me the PG and I shall have a look at it)
There are also some more info for layerMasks in this post (and more to come in the doc soon to extend this section for ‘in-depth layerMask’)