In some situations, users granted the 'edit any content' and/or 'delete any content' permission(s) are not able to view the nodes they can edit or delete. This is most apparent when considering unpublished nodes.
This could be fixed by implying this permission for any user granted the 'edit any' or 'delete any' permission, but a better, more secure solution is the addition of a new 'view any content' permission.
A seven-line patch is attached which provides this functionality, please consider for inclusion in future releases.