To adopt glass effect in custom view, we are using glassEffect modifier. It is working fine iOS26. However in iPadOS 26 beta 3, app is getting crash as soon as app launch. In iPad simulator it's working fine.
Symbol not found: _$s7SwiftUI4ViewPAAE11glassEffect_2inQrAA5GlassV_qd__tAA5ShapeRd__lF
Have you raised a Feedback report? If not, please do so at https://feedbackassistant.apple.com/ then post the FB number here.
I've seen this happen if you have latest Xcode beta installed but using iOS 26 beta 2 while having beta 3 installed. Try deleting iOS beta 2 from your list and see if that's going to help.