Line of Sight bug or intentionally removed?

I noticed today while playing Evelynn that I could not hide behind structures to obscure myself from enemies like camouflage champions have been able to do for years now. Here's a video of it: Normally, I would assume it were a bug, especially since I haven't seen anyone talking about it, but seeing that line of sight still interacts normally with walls and bushes leads me to believe that this is an intentional change, which would make this a extremely huge nerf to camouflage champions if so, certainly enough to warrant notification and discussion in one of Riot's Gameplay Thoughts threads.
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