In dspace.cfg (or local.cfg) the property webui.itemdisplay.default allows to configure which metadata fields should provided on the item display page. The default configuration works fine, but if one changes the property to contain a list of fields, only the first field is shown.
How to reproduce: add "webui.itemdisplay.default = dc.title, dc.contributor.author, dc.description, dc.decription.abstract" to local.cfg. Publish an item containing at least two of these fields and open it. You will see the first field only. You can remove dc.title from the list to proof that the title is not shown by default, but only the first field is taken.