Dear @tigroumeow
Similar errors by using the 1.2.5 version.
I have created a new gallery, using the 1.2.5 version (fresh installation) and assigned the links to the images.
The thing is that from the “preview” WP feature, gallery links does work, clicking on the images, the intended page is opened, but when the post is published, goes alive, none of the links work, instead, the attachment page is opened.
I have the impression that it has to do with the class=”custom-link no-lightbox” instruction.
PHP Version 7.2.15
Wordpress 5.3.2
