Dynamically created render targets do not work as expected when packaged for windows. If it is replaced with a static render target, it works fine.
Found in 4.20 CL# 4369336, 4.21 CL# 4753647, 4.22 CL# 5531554, 4.23 CL# 5586650
Results:
The plane will be showing the default diffuse texture
Expected:
The render target would work when using the Create Dynamic Material Instance node
Workaround:
if you create the render target after Begin Play instead of the construction script, it works.
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-72038 in the post.