Email variables are not working when sending a test email

[andrewlimaza]

Describe the bug
A clear and concise description of what the bug is. Please be as descriptive as possible; issues lacking detail, or for any other reason than to report a bug, may be closed or left unattended.

NOTE: Live emails work correctly as intended.

To Reproduce
Steps to reproduce the behavior:

1. Go to Email Templates, choose any of the abandoned cart recovery email template and select edit.
2. Click on Save Template and Send Email.
3. See that all variables are not being replaced correctly.

Expected behavior
Test emails should replace these variables with the dummy data.

Isolating the problem (mark completed items with an [x]):

• I have deactivated other plugins and confirmed this bug occurs when only Paid Memberships Pro plugin is active.
• This bug happens with a default WordPress theme active, or Memberlite.
• I can reproduce this bug consistently using the steps above.