[solved] What is this in Orders / Processed orders?

Hi, I wonder what happened. 

In the page payment-orders?type=processed there is a strange line on TOP showing not more than ''... unknownunknownunknownunknownunknown... endless...''

Whatch this

So I wonder, where does this input come from, so I can delete etc. it?

My SetUp: cloud4 / UNA hosted

Maybe involved 3rd party Modules: Banner, Points, Points Wallet

What did I do? I tested Banner Spaces, Payment of Banners with Points Wallet and therefore transferring different amounts of Points to Testusers. They created Banners, deleted them, created new, deleted...many times.....

Any Ideas?