Client Match Timer Bug

When my I log onto the League client, I sometimes like to check and see who's on and if I can play with them, and recently I've been seeing a lot of bugged match timers through the friends list, which bothers me a tremendous amount because I rely on it to see when I can play a match with my friends. This bug occurs no matter what champion, map, gamemode, etc. [slayer-jinx-unamused] A final note, I don't believe that any of my friends have this problem because I've asked them. -Thanks