Select antennas and other items disappearing from Rocket League

We're not quite sure what's going on here, but multiple Reddit users have confirmed that some of their antennas and other in-game items have seemingly disappeared from Rocket League. The Wheatley antenna and Witcher medallion specifically have been called out. It appears some gaming-themed antennas and select Portal items have been yanked, and we don't know if they're returning. Anyone else notice something like this disappearing from their game?