When people “reserve” stuff that drops. That’s such bullshit.
I only hate this when they don’t tell you BEFORE you join that certain items are reserved. I’ve run pug Ulduar runs where we’ve reserved the shards for a guildmate, and have found that if you tell people before they join they are much more accepting.
I don’t like getting to a boss and hearing “oh by the way, ML is on b/c so and so is getting this”. Do not like that.