I took a break for the holidays and when i came back i can no longer right click pick up books to insta bag them. There's a gear icon over them now and i can read them but it leaves the book where it was. I wasnt sure if this was a bug, part of one of the recent patches, or linked to some mod I have but it didn't used to be like this. I did figure out as @Tovi mentioned, i can just drag the item itself over to a character picture and it will bag it.
I did notice also i no longer have to right click disarm/pick lock. Those things also have gear icons so i can just interact with them. This post is from last summer though so i'm not sure why only now i'm seeing this change? Weird, just some musings.