What did you do?
I'm encountering a UI bug on the Channel screen when I toggle ON the Button Shape accessibility setting on my device.
There is a small rounded rectangle under the message composer view and when I tap on it, a blank screen is pushed onto.

As my finding, the issue could be related to the NavigationLink used to navigate to the Message Thread screen here:
GetStream Environment
GetStream Chat version: 4.66.0
GetStream Chat frameworks: StreamChat, StreamChatSwiftUI
iOS version: 18.2
Swift version: Swift 5
Xcode version: 16.2
Device: Simulator iPhone 16 Pro