How to reproduce:
1. Wire a constant combinator to a requester and set the requester to "Set requests"
2. Blueprint and notice it copies nicely if you use the same requester and the wire will carry
3. Now try adding a signal to the constant combinator and try blueprinting over again, the requester will appear red and will not connect the wire as desired
Gif to show this happening:
I understand that this would be an issue if the player had manually set requests in the requester as then the manually set entity would be different from the blueprint entity and therefore it would not carry, however I believe that in "Set requests" mode it should carry as this is not player set. I hope this makes sense!
For reference in a wider context, here is a screenshot of what I was trying to blueprint in my test world when I ran into the issue. You can see the wire will not carry and as a result the entire system would not work.
