Cannot create page from template if variables are used in template

Issue Summary

Unable to create pages from templates if variables are included in templates.

Steps to Reproduce

1. Step 1 Create a template using variables
2. Step 2 Go to space > click on + icon > select template and try to create a page using a template.
   or create a page including button using "Create from template macro" (using a template with variables)

Expected Results

We should be able to create pages using templates.

Actual Results

It will not load editor/ nothing happens.

Workaround

Go to space settings > content and tools > click on "+" icon and select template, it will load the editor without any issue.