rob006 There Is No Light 616 is another that refuses to get removed from wishlist, it re-adds itself on the next sync because there was a version of it on Steam that was delisted at some point. I had to manually remove it using this Steam guide.
Also, slightly off-topic, but games that I've removed from my Steam wishlist should get removed from the gg.deals wishlist on the next sync, right? I recently had to manually remove a few games, including Eximius: Seize the Frontline and Yet Another Zombie Defense HD, because they were never removed from my gg.deals wishlist.