On iOS 26 beta 4 segmented control is not working properly when created via xib. When selecting, text is disappearing . Here is the link where it shows bug with a video. https://www.reddit.com/r/Xcode/comments/1m9n9qi/xcode_and_os_26_beta_4_liquid_glass_ui_still_has/?utm_source=share&utm_medium=web3x&utm_name=web3xcss&utm_term=1&utm_content=share_button
This is not the place to report bugs. Use the Feedback Assistant app to report issues to Apple. Be sure you include a clear explanation of the issue and a simple test app that demonstrates the problem.
Feedback assistant reports are private. Also I remember last time it redirected me to this page. I think its better to have this kind of issues public.