Description:
A field (Array or list?) is missing the ability to expand, cannot assign Size, therefore cannot be edited.
This occurs on the LEGO microgram tutorial "Customize your game", this issue is currently block the tutorial to proceed.

Note: Works well on 2020.3.21f1, this is a regression

Step to reproduce:
- Create a project using the LEGO microgame
- Start the "Customize your game" tutorial
- Proceed to "Configure the detonator" tutorial
- Change Target to "Specific Action"
- Observe the Specific Action cannot expanded

Expected result: Specific Action can be expanded, size can be assign
Actual result: Field cannot be expended