Anchor in portlet url does not work correctly

• Type: Regression Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.0.X, 7.1.X, Master
• Fix Version/s: 7.0.0 DXP FP72, 7.0.10.11 DXP SP11, 7.0.X, 7.1.10 DXP FP7, 7.1.10.2 SP2, 7.1.3 CE GA4, 7.1.X, Master
• Component/s: ~ [Archived] Frontend Infrastructure
• Labels:
  • ee-ts
  • liferay-dxp-70-sp11
  • liferay-dxp-71-sp2
  • liferay-fixpack-de-72-7010
  • liferay-fixpack-dxp-7-7110
• Branch Version/s:
  7.1.x, 7.0.x
• Backported to Branch:
  Committed
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/66791

Steps to reproduce:
1. Start a bundle of Liferay
2. Add following property in portal-ext.properties file so that the anchor can be added by generating portlet url:

portlet.url.anchor.enable=true

3. Log in as admin
4. Add any portlet to the top of the page and an RSS Publisher portlet to bottom of page
5. Go to Configuration menu of the RSS Publisher portlet
6. Click Manage Display Templates for DXP
7. Click Add to add a new template
8. In the content, add

<a href="${currentURL}"> test </a>

and Save the template

9. Open configuration again to access the new template and set it as display template
10. Under Feeds section, create a test feed, set http://localhost:8080 as URL and Save it Click on the "test" link in RSS Publisher portlet

Expected behavior: Clicking the test link jumps the page to the RSS portlet.
Actual behavior: The page reloads, and will not scroll to the position of RSS Publisher portlet.

• The generated url contains the correct portlet anchor, but it has a "&" character before the "#", so this anchor will not work.
• This only occurs on the first click. Every following click will work until parameters are lost from the URL

Also tested on:
7.0x @4503abea729829dfa1efae68c0c3cecde0775f7e -> Same behavior
Master @d5a562682b4f68fdb4464c30006710553315d4df ->

• "&" is not in the link any more, however, clicking "test" still navigates to the top of the page