Anyway, I found a way:
1 - I rename (action that breaks the linked expressions between VR comps) the comp, then it disappears from the VR-UI panel, leaving space for other VR comps.
2 - In case I need more actions in that comp, I rename it as it was, and woilà, it pos up in the panel again!
ps. need more check to discover if it works with several 3dplugin
Anyway ADOBE, please fix the bug!
You are correct that the original composer script panel as well as the VR Comp Editor panel do not scroll, even as you add new edits. This is a known limitation that we are trying to address, though as of this writing the fixes we have tried so far cause other serious bugs. But the bug is still under active investigation, so please stay tuned.
Meanwhile, that is a very innovative workaround you discovered and documented above!
Hi! the problem persists, or am I wrong?
You're not wrong -- the VR Comp Editor panel is an embedded script UI panel that does not currently support scrolling, but we're working on making it support scrolling. I hope to have some good news soon.