Issue Summary

When you open a Pull request through the commit button option, the default description is not populated. 

Steps to Reproduce

1. Go to your source page and open the file you want to edit;
2. Edit the file;
3. Click on Merge;
4. Select the option to create a Pull Request.

Expected Results

The default description template should display on the "description" option

Actual Results

The commit message display instead. 

Workaround

As a workaround you can:

• Go to your source page and open the file you want to edit;
• Edit the file;
• Click on Merge whiteout selecting to create a PR;
• Go to the PR tab;
• Click on "Create a Pull Request";
• The PR default description will display.