There’s probably a few different ways to tackle it, but you’ll ultimately need the pins turned on to preserve a fixed pixel margin size.
I think you’ll be able to achieve (or closer to it) with changes like:
- As noted in the other topic, put the nav persistent symbol at the top-level, not within a group
- Turn on the left/right pins
- Make sure the top/left position of the persistent symbol is the same in both scenes (and don’t animate it coming in)
- Uncheck the height scale for the biotech scene