Glitch with lists

This glitch has actually been around for over a year but I considered it minor until recently.
Here's an example of just the latest I've come across. Lea Thompson is listed as being on my list of movies that begin with the letter G, as well as my list of movies made in 1937. Obviously, Lea Thompson is a person and not a movie so there's no way she can be on any of thoses lists but when I try to add her to a list from her page, it shows up as her being on those two lists. Over the past year I have noticed thousands of cases like this but it never bothered me until recently. I can't cite a specific example at the moment, but I have also found a few cases where I intend to add a certain actor to my favorites list but in the actor page it says that actor is already on my favorites list. When I went to that page, the actor was definitely not on the list. My only issue is that now it claims that actors or movies are already in a list when they are not.
Here's an example of just the latest I've come across. Lea Thompson is listed as being on my list of movies that begin with the letter G, as well as my list of movies made in 1937. Obviously, Lea Thompson is a person and not a movie so there's no way she can be on any of thoses lists but when I try to add her to a list from her page, it shows up as her being on those two lists. Over the past year I have noticed thousands of cases like this but it never bothered me until recently. I can't cite a specific example at the moment, but I have also found a few cases where I intend to add a certain actor to my favorites list but in the actor page it says that actor is already on my favorites list. When I went to that page, the actor was definitely not on the list. My only issue is that now it claims that actors or movies are already in a list when they are not.

EDIT: Oops... I accidentally sent a blank reply to my own message but I guess it could have used a bump anyway.