Guest user is unable to add comment to Liferay asset

• Type: Regression Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: Master
• Fix Version/s: 7.0.0 DXP FP12, 7.0.3 CE GA4, 7.1.X, Master
• Component/s: Collaboration, Collaboration > Comments
• Labels:
  • QA-AUTOMATION
  • liferay-digital-enterprise-70-sp2
  • liferay-fixpack-de-12-7010
• Fix Priority: 4
• Sprint: Xanthochroite
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/46691
• QA Test Name:
  • PGBlogs#ViewBlogsEntryCommentAsGuest
  • SocialactivityUsecase#BlogsDemo
• QA Test Score: 8

Steps to reproduce:

1. Add a site page with a blogs portlet
2. Add a blog post to portlet
3. Log out of Portal
4. Navigate to blogs portlet
5. Click into blog entry
6. Add a comment as a guest
7. Click save

Expected result:
Guest comment is added to blog post

Actual result:

• Error message appears in comments
• "Success" message appears in the sign-in portlet: Your comment has already been posted. Would you like to create an account with the provided information?
• No guest comment appears in blog post

This also happens with DM comments.

Reproduced on:
Tomcat 8.0.32 + MySQL 5.6.
Portal master GIT ID: c0d8e45034c7d39c53f38a4d4d4ffa279017943e