Error on Sites contributor asset searching and viewing result list ?

We are running WebCenter Sites 11.1.1.8 Patch 6.

We have a global index running and some asset types have asset type based index as well configured with attributes all of which include the name.

The issue, occurs when searching for for all asset types in the contributor, the result assets of type "MyAssetType" appear with blank names.

We have just performed a recreation for the global index  (file system index was deleted for the process) of the index cause of a suspected corruption from a network drive IO error, after the rebuilt most assets reappeared with names but not all of them.