Create From Template macro sends users to dashboard if the space they are creating the macro in doesn't exist

Steps to Reproduce:

1. Login to Confluence with accountOne
2. Create a space - "unrestricted"
3. Create a space - "restricted", that is accessible only to accountOne
4. Create a page in the "unrestricted" space, and add a create from template macro that uses the Space key of restricted
5. Logout with accountOne, and login with accountTwo
6. Attempt to use this macro

Expected Results:
An error message or other form of feedback that the user is attempting to create a page in a restricted space.

Actual Results:
The user is sent back to the dashboard, with something like the following in their URL:

http://localhost:10544/confluence/?createDialogSpaceKey=RES&createDialogBlueprintId=a204db16-9209-4242-b84a-8a6448ecf53a