Not sure where to contribute to store.kde.org. I know GitHub - KDE/ocs-webserver: Webserver for running a software store exists, but there isn’t an entry on https://bugs.kde.org.
Anyways, there’s a bug where you can’t delete changelog entries. It’s trying to post
/p//deleteupdateajax instead of
Saving an edit works because the productId is hardcoded into the function (when the page is rendered I guess).
Where as delete calls
var productId = $modalPpload.attr('data-product-id'); which isn’t set for either button.