diff --git a/lightningbeam-ui/lightningbeam-editor/src/export/gpu_yuv.rs b/lightningbeam-ui/lightningbeam-editor/src/export/gpu_yuv.rs
index c5cc8a0..9dcda91 100644
--- a/lightningbeam-ui/lightningbeam-editor/src/export/gpu_yuv.rs
+++ b/lightningbeam-ui/lightningbeam-editor/src/export/gpu_yuv.rs
@@ -175,7 +175,9 @@ impl GpuYuv {
 }
 
 /// CPU reference for the exact math/layout the shader produces — used by unit tests so
-/// the packing and BT.709 coefficients stay verifiable without a GPU.
+/// the packing and BT.709 coefficients stay verifiable without a GPU. Test-only, so it isn't
+/// compiled into (and flagged as unused by) release builds.
+#[cfg(test)]
 fn cpu_reference(rgba: &[u8], width: u32, height: u32, full_range: bool) -> Vec<u8> {
     let w = width as usize;
     let h = height as usize;
diff --git a/lightningbeam-ui/lightningbeam-editor/src/mobile/mod.rs b/lightningbeam-ui/lightningbeam-editor/src/mobile/mod.rs
index df1ec1f..31385ea 100644
--- a/lightningbeam-ui/lightningbeam-editor/src/mobile/mod.rs
+++ b/lightningbeam-ui/lightningbeam-editor/src/mobile/mod.rs
@@ -40,7 +40,7 @@ const TOPBAR_H: f32 = 40.0;
 /// Clamp a desktop dialog width to fit the current screen (with side margins). A no-op on wide
 /// desktop screens (`min` keeps the desired width); on a phone-aspect window it shrinks to fit.
 pub fn dialog_width(ctx: &egui::Context, desired: f32) -> f32 {
-    let avail = ctx.screen_rect().width() - 24.0;
+    let avail = ctx.content_rect().width() - 24.0;
     desired.min(avail.max(200.0))
 }
 
diff --git a/lightningbeam-ui/lightningbeam-editor/src/panes/node_graph/mobile.rs b/lightningbeam-ui/lightningbeam-editor/src/panes/node_graph/mobile.rs
index 051a29d..824f49d 100644
--- a/lightningbeam-ui/lightningbeam-editor/src/panes/node_graph/mobile.rs
+++ b/lightningbeam-ui/lightningbeam-editor/src/panes/node_graph/mobile.rs
@@ -36,8 +36,6 @@ pub struct MobileNodeState {
     pub mode: NodeViewMode,
     /// The module currently shown in Focus (and centred in Patch).
     pub focus_node: Option<NodeId>,
-    /// Armed cable source in Patch: (node, output-port index).
-    pub patch_source: Option<(NodeId, usize)>,
     /// Whether the add-node picker overlay is open.
     pub show_add: bool,
     /// Search filter in the add-node picker.
@@ -51,7 +49,6 @@ impl Default for MobileNodeState {
         Self {
             mode: NodeViewMode::Focus,
             focus_node: None,
-            patch_source: None,
             show_add: false,
             add_search: String::new(),
             patch_pick: None,
diff --git a/lightningbeam-ui/lightningbeam-editor/src/preferences/dialog.rs b/lightningbeam-ui/lightningbeam-editor/src/preferences/dialog.rs
index 16e379d..7ef5391 100644
--- a/lightningbeam-ui/lightningbeam-editor/src/preferences/dialog.rs
+++ b/lightningbeam-ui/lightningbeam-editor/src/preferences/dialog.rs
@@ -165,7 +165,7 @@ impl PreferencesDialog {
         // mobile modals; on desktop, the familiar draggable window.
         let width = crate::mobile::dialog_width(ctx, 550.0);
         let scroll_h = if mobile {
-            (ctx.screen_rect().height() - 220.0).clamp(160.0, 400.0)
+            (ctx.content_rect().height() - 220.0).clamp(160.0, 400.0)
         } else {
             400.0
         };