iPhone Duo: the chat list's search field stays on screen in unfolded landscape

With no status bar height, SearchDisplayController starts a list-mode search bar 20pt above the top, which suits the
legacy fields: they are drawn at the bottom of the bar. The glass field is drawn at the top of its frame, in the
navigation bar's search row, already below the status bar, so the offset put it 20pt above the row. In the Duo's
unfolded landscape the list pane has no status bar (the clock is in the detail pane's corner), and the active field
sat at window y -12, half off the screen. A glass bar now starts at the row's top, its bottom where it was, so the
results' inset is unchanged. Any status bar height above 0, the legacy fields and `.navigation` mode lay out as before.

Verified on the Duo simulator, unfolded landscape: the field at window y 8 (was -12, from an lldb frame dump), and the
open animation, captured at 10x slow, settles there without a jump.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Author: isaac

submodules/SearchUI/Sources/SearchDisplayController.swift

@@ -11,6 +11,17 @@ public enum SearchDisplayControllerMode {
     case navigation
 }
 
+/// The search bar's frame in `.list` mode. With no status bar height the bar starts 20pt above the top, which suits the
+/// legacy fields, drawn at the bar's bottom. A glass field is drawn at the top of its frame, in a search row already
+/// placed below the status bar, so its frame starts at the row's top instead (offset, the field sat 20pt above the row:
+/// iPhone Duo's unfolded landscape, whose list pane has no status bar). The frame's bottom stays where it was.
+private func listSearchBarFrame(navigationBarFrame: CGRect, fieldStyle: SearchBarStyle) -> CGRect {
+    if case .glass = fieldStyle, navigationBarFrame.minY < 0.0 {
+        return CGRect(x: navigationBarFrame.minX, y: 0.0, width: navigationBarFrame.width, height: navigationBarFrame.maxY)
+    }
+    return navigationBarFrame
+}
+
 public final class SearchDisplayController {
     private final class BackgroundNode: ASDisplayNode {
         var isTransparent: Bool = false
@@ -189,7 +200,7 @@ public final class SearchDisplayController {
                     searchBarFrame = CGRect(x: 0.0, y: 0.0, width: layout.size.width, height: 54.0)
                 }
             } else {
-                searchBarFrame = navigationBarFrame
+                searchBarFrame = listSearchBarFrame(navigationBarFrame: navigationBarFrame, fieldStyle: searchBar.fieldStyle)
                 navigationBarHeight = navigationBarFrame.maxY + 8.0
             }
             transition.updateFrame(node: searchBar, frame: searchBarFrame)
@@ -286,7 +297,11 @@ public final class SearchDisplayController {
         }
 
         if !self.searchBarIsExternal, let searchBar = self.searchBar {
-            searchBar.frame = navigationBarFrame
+            if case .list = self.mode {
+                searchBar.frame = listSearchBarFrame(navigationBarFrame: navigationBarFrame, fieldStyle: searchBar.fieldStyle)
+            } else {
+                searchBar.frame = navigationBarFrame
+            }
             insertSubnode(searchBar, true)
             searchBar.layout()