[activity stream] Activities for a user may show shared objects with another user
For some reason, objects shared with user X are also appearing to another user on the activity list. The case occurs with, for example, for user
tpereira on object http://beatweb-staging/toolchains/chichan/full_pre_mlbphs_projection/1/
As you can see from the list, it looks like user
chichan shared that object with user
tpereira. When the user
tpereira clicks on the contribution, he gets a 404 (which is correct, since the object was not shared with that user).