Steps to reproduce:

1. Create a Template with a variable;
2. Set the variable to List and define available values;
3. Copy the variable to clipboard and attempt to paste it into another template - it'll be set to Text and the list of values will be lost.

This doesn't happen when a variable is copied within the same template.

Use case:
There's no feature for copying Templates between Spaces, so copy+paste can be used as a workaround. Variables should be copied properly in the process.