Hello,
I thing that i've identified a bug with special characters in CRM 2013.
I have step by step :
1 > Created a record of the "A" entity
2 > Created a record of the "B" entity by a looking located into "A" record. The record of "B" entity have been named '''''''
But when i'm return into the record of the "A" entity, in the lookup that contain the record of the "B" entity, i see special characters => '''''''
Here's a screen :

This only appear when i'm using some special characters like ' or > or <
I've tried with IE9,10 and Chrome and i have the same result.
Thank you very much for your help.
Best regards,
Jean-Michel