I am running an apache solr search index for users that also have profile2 profiles.
[EDIT] It has also been reported with a normal database index.
When I output results using a view and add fields from the attached profile2 profiles I get the following error in my view's live preview:
ResponseText: EntityMalformedException: Missing bundle property on entity of type profile2. in entity_extract_ids() (line 7389 of /var/www/mirp/includes/common.inc).
So far it seems to only affect the live preview and the actual view doesn't throw errors.
There is an issue relating to this in the profile2 queue but I don't think the problem lies in that module -