Hi all,
After upgrading to the iOS 26 beta, the scrolling in my SwiftUI chat view is completely broken. The exact same code works perfectly on iOS 18.
Context:
I have a chat view using ScrollViewReader and a vertically-reversed ScrollView (with .rotationEffect(.degrees(180))). Each message row (MessageBubble) uses multiple simultaneousGesture handlers:
- Horizontal drag for swipe-to-reply (and other actions: pin, delete)
- Long press for showing popover/actions
- Vertical scroll for normal chat scrolling
This was working great on iOS 18. In iOS 26 beta, the vertical scroll is either completely disabled, jittery, or hijacked by the message row’s drag gestures, even though .simultaneousGesture is used (see code below).
Minimal Repro Sample
MessageListView.swift
swift Copy Edit
ScrollViewReader { proxy in
ScrollView(.vertical, showsIndicators: false) {
LazyVStack(spacing: 0) {
// ... grouped messages
ForEach(...) { ...
MessageBubble(...) // see below
}
Color.clear.frame(height: 8).id("BOTTOM_ANCHOR")
}
.padding(.horizontal, 4)
.rotationEffect(.degrees(180))
}
.rotationEffect(.degrees(180))
}
MessageBubble.swift
struct MessageBubble: View {
// ...
var body: some View {
// horizontal swipe-to-reply gesture
let dragGesture = DragGesture(minimumDistance: 10)
// ...
ZStack {
// ...
HStack { ... }
// ...
.simultaneousGesture(
DragGesture(minimumDistance: 0) // for long press
// ...
)
.simultaneousGesture(dragGesture) // for horizontal swipe
}
// ...
}
}
