Champions in Brush are Visible Without Wards or Vision in Brush

In the match I just played, both the Garen and I could see each other in the top lane brush without either of us stepping to the brush and no wards being in either brush. This was also true for the third brush when the Garen attempted to drop minion aggro. I have a clip displaying the incident recorded through the client's highlight system, but I don't know how to upload it. If anyone can help, I'd appreciate it. Thanks.
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