I had a weird problem last night with the version that was up. As a paladin in a raid only a few of my buffs were showing up in the raid frames when it was filtered, as in, I'd see a couple of people out of ten who had blessing of might or wisdom but everyone else had none.
May not be the case, but I noticed with my priest that if another priest with the same rank fort but with it improved via disc talents buffs someone, I can't see it in my 'filtered buffs'
I know technically I can't cast this buff, but can get annoying when in a raid, looks like 5 people aren't buffed and I try to buff them, or have to check each one manually in the target frame (where I don't filter buffs)
As far as I heard, it was Blizzard who 'filtered' the buffs and the addons just hooked into their setup, but I never remember having this problem pre tbc. Is it a new thing?