Custom RTE Para format, not working as expected

[AbhishekCaleb]

Expected Behaviour

As per this https://experienceleague.adobe.com/en/docs/experience-manager-65/content/sites/administering/operations/configure-rich-text-editor-plug-ins#paraformats
if i add a new custom para format, it wraps the content in that tag. If I click on another format, it should remove the previous selection and add the new one.

eg; if i have new custom tag as 'testtag1'
the markup would be <testtag1>something</testtag1>
if i select now a different one, say h1, it should just replace.
like, <h1>something</h1>

Actual Behaviour

it keeps the newly added custom para format and wraps the new selection on top of it.
so the above markup , after selecting h1, would become,
<h1><testtag1>something</testtag1></h1>

Reproduce Scenario (including but not limited to)

tested with the aem-guides-wknd code , on a new aem instance (cloud/ local) and can reproduce the same on actual cloud as well.

Steps to Reproduce

• add a new tag here ui.apps/src/main/content/jcr_root/apps/wknd/components/text/_cq_editConfig.xml
  around line 64 , after "pre" tag
  <default_subtitle jcr:primaryType="nt:unstructured" description="Subtitle" tag="subtitle"/>

• next, go to ui.content/src/main/content/jcr_root/conf/wknd/settings/wcm/policies/.content.xml
  around line 342, after "pre" tag
  <item10 jcr:primaryType="nt:unstructured" description="Subtitle" tag="subtitle"/>

• next, add the new tag in the xss protection config here, ui.apps/src/main/content/jcr_root/apps/cq/xssprotection/config.xml
  add <tag name="subtitle" action="validate"/> nearabout lines 845 , 850, where we are validating html tags.

Platform and Version

I've tested this on cloud version aem-sdk-2024.7.17258.20240726T172406Z-240700

Sample Code that illustrates the problem

code sample provided above

Logs taken while reproducing problem

No specific logs

Also: there is an experience league discussion link for the same
https://experienceleaguecommunities.adobe.com/t5/adobe-experience-manager/custom-paragraph-formats-in-rte-not-getting-removed-on-selecting/m-p/715416#M176680

[AbhishekCaleb]

[AbhishekCaleb]

after i change it to another format