iOS 14/15 entering Guided Access mode also tunes to previous channel

I'm noticing that on both iOS 14/15, that when I enter Guided Access mode (either by physical key presses or GUI) the device will enter that mode, but Channels also tunes to the previously selected channel. A force quit of Channels App fixes this, until which point the channel is changed once, then the issue returns. I am able to reproduce this issue consistently on iPad Pro 12.9 3rd Gen, iOS 14.8, and iPhone 12 running iOS 15.0.1