diff --git a/crates/ui-egui/src/dialogs_assembly_tests.rs b/crates/ui-egui/src/dialogs_assembly_tests.rs
index 0785ca91..083645fe 100644
--- a/crates/ui-egui/src/dialogs_assembly_tests.rs
+++ b/crates/ui-egui/src/dialogs_assembly_tests.rs
@@ -250,7 +250,8 @@ fn drive_value_takes_the_keyboard() {
     let screen = egui::Rect::from_min_size(egui::Pos2::ZERO, egui::vec2(1600.0, 1000.0));
     let frame = |app: &mut SolveApp, events: Vec<egui::Event>| {
         let input = egui::RawInput { screen_rect: Some(screen), events, ..Default::default() };
-        ctx.run_ui(input, |ui| crate::dialogs::show(app, ui.ctx()))
+        // Nothing renders here: drop the frame's texture changes deliberately.
+        ctx.run_ui(input, |ui| crate::dialogs::show(app, ui.ctx())).textures_delta.clear();
     };
     frame(&mut app, vec![]);
     frame(&mut app, vec![]);
diff --git a/crates/ui-egui/src/preselect_tests.rs b/crates/ui-egui/src/preselect_tests.rs
index 8a79bbb1..f7bbfd89 100644
--- a/crates/ui-egui/src/preselect_tests.rs
+++ b/crates/ui-egui/src/preselect_tests.rs
@@ -297,7 +297,7 @@ fn boundary_fill_finds_the_cells_and_fills_the_ticked_ones() {
     app.dialog = Some(d);
     // The dialog finds the cells on its next frame.
     let ctx = egui::Context::default();
-    let _ = ctx.run_ui(Default::default(), |ui| crate::dialogs::show(&mut app, ui.ctx()));
+    ctx.run_ui(Default::default(), |ui| crate::dialogs::show(&mut app, ui.ctx())).textures_delta.clear();
     let mut d = app.dialog.take().unwrap();
     let Kind::BoundaryFill { cells, .. } = &mut d.kind else { panic!() };
     // Only A, only B, and both.