Unable to create release for new tag

It seems the "Create release" link provided on the Tags page isn't functioning.

Please visit https://www.drupal.org/project/fieldblock and use the "Add new release" link located at the bottom of the page instead.

You do not create releases from the GitLab side. You create releases from the project page.

On the project page there is the Create a new release link. The linked page will ask you to select the tag/branch for which you want to create a release. It now shows only 8.x-1.x (8.x-1.x-dev) because there is no tag without a release, no new tag has been created, or no new tag has been yet pushed to the git.drupalcode.org repository.

Creating a Tag or Branch in Git explains how to create a tag on drupal.org. I hope it helps.

Are you sure the tag is not 8.x-2.3? Because there is already an 8.x-2.3 release you created on December 27, 2024 (yesterday).

In that case, the GitLab link for that tag is https://git.drupalcode.org/project/fieldblock/-/tags/8.x-2.3.