The confirmation message not displaying on specific pages

haritha_c: This is not the right place for your issue. Please create an issue in the respective module project.

Hello! Please update the issue summary with precise steps to reproduce the bug.

I can confirm this issue on version 6.1.5.

I've experienced it on 3 separate D9 sites so far. The issue seems to be with the following configuration:
Confirmation > Confirmation type > Message (reloads the current page/form and displays the confirmation message at the top of the page)

The form is submitted, but when the page reloads there is simply no confirmation message displayed. There are no errors noted in the log nor in the browser's console.

My workaround is to use any of the other options under Confirmation > Confirmation type - all of which seem to be working as expected.

** I have not yet had a chance to test on a fresh D9 install with no other modules installed. I'll see about doing that tomorrow.

Based #5 this is most likely a page or render caching issue blocking the message from being displayed.

We would need concrete steps to reproduce via a plain vanilla instance of Drupal to be able to debug this issue.