You can copy custom blocks to other sprites

[bruh-9000]

Expected Behavior

• Error pops up that says you cannot copy a custom block to another sprite

Actual Behavior

• You can copy a custom block to another sprite and its definition is not created for that sprite

Steps to Reproduce

Explain what someone needs to do in order to see what's described in Actual behavior above

Steps to reproduce the behavior:

1. Create a custom block
2. Drag copy it to another sprite

System Details

All

[alexcui03]

Preventing duplication of procedure caller might not be a good idea i think. If there exists an exactly same procedure definition, there's no reason to stop it. Currently if scratch doesnt find a definition in execution, it will just do nothing.

How about adding a check for used custom blocks in target sprite to ensure a legal definition exists?