diff --git a/crates/ui-egui/src/tools/crop_size.rs b/crates/ui-egui/src/tools/crop_size.rs
--- a/crates/ui-egui/src/tools/crop_size.rs
+++ b/crates/ui-egui/src/tools/crop_size.rs
@@ -232,6 +232,7 @@ pub fn clear_ratio(o: &mut ToolOptions) {
         clear(o);
     } else {
         o.crop_ratio.clear();
+        select_custom_ratio(o);
     }
 }
 
@@ -385,6 +386,26 @@ mod tests {
         assert_eq!(width / height, 4.0 / 3.0);
     }
 
+    #[test]
+    fn clear_ratio_discards_complete_and_partial_ratio_fields() {
+        for (width, height) in [(16.0, 9.0), (4.0, 0.0), (0.0, 3.0)] {
+            let mut options = ToolOptions::default();
+            set_custom_ratio_fields(&mut options, width, height);
+            clear_ratio(&mut options);
+            assert!(options.crop_ratio.is_empty());
+            assert_eq!(custom_ratio_fields(&options, (300.0, 200.0)), (0.0, 0.0));
+            set_custom_ratio_fields(&mut options, 5.0, 0.0);
+            assert!(options.crop_ratio.is_empty(), "entering a new width must not reuse the old height");
+            assert_eq!(custom_ratio_fields(&options, (300.0, 200.0)), (5.0, 0.0));
+        }
+        let mut options = whr("4 in", "6 in", "300", PX_PER_IN);
+        clear_ratio(&mut options);
+        assert_eq!(
+            (options.crop_ratio.as_str(), options.crop_width.as_str(), options.crop_height.as_str(), options.crop_resolution.as_str()),
+            (WHR, "", "", "")
+        );
+    }
+
     #[test]
     fn custom_ratio_keeps_three_decimals() {
         // #6487: 1.414 : 1 (ISO A sizes) stays 1.414, not 1.4, as in Photoshop.
diff --git a/crates/ui-egui/tests/it/crop_default_mode.rs b/crates/ui-egui/tests/it/crop_default_mode.rs
--- a/crates/ui-egui/tests/it/crop_default_mode.rs
+++ b/crates/ui-egui/tests/it/crop_default_mode.rs
@@ -238,3 +238,34 @@ fn a_resize_keeps_the_box_centre_after_a_space_pan() {
     let b = screen_box(&h);
     assert!(mid(b).distance(mid(box0)) < 0.5, "still where it was: {:?} vs {:?}", mid(b), mid(box0));
 }
+
+#[test]
+fn clear_removes_the_displayed_crop_proportions_without_changing_the_frame() {
+    let _gpu = photocraft_testkit::gpu_lock();
+    let Some(mut h) = setup() else { return };
+    let o = &mut h.state_mut().ui.tool_options;
+    o.crop_ratio = "16:9".into();
+    o.crop_custom_ratio_width = 16.0;
+    o.crop_custom_ratio_height = 9.0;
+    h.run_steps(3);
+    assert!(h.query_all_by_value("16").next().is_some());
+    assert!(h.query_all_by_value("9").next().is_some());
+    let frame = h.state().ui.crop_rect;
+    let save = |h: &mut Harness, name: &str| {
+        if let Some(dir) = std::env::var_os("CRAFT_UI_VISUAL_FIXTURES") {
+            let dir = std::path::PathBuf::from(dir);
+            std::fs::create_dir_all(&dir).unwrap();
+            h.render().unwrap().save(dir.join(name)).unwrap();
+        }
+    };
+    save(&mut h, "crop-clear-before.png");
+    h.query_all_by_label("Clear").min_by(|a, b| a.rect().top().total_cmp(&b.rect().top())).expect("Crop options bar Clear").click();
+    h.run_steps(3);
+    save(&mut h, "crop-clear-after.png");
+    let o = &h.state().ui.tool_options;
+    assert!(o.crop_ratio.is_empty());
+    assert_eq!((o.crop_custom_ratio_width, o.crop_custom_ratio_height), (0.0, 0.0));
+    assert!(h.query_all_by_value("16").next().is_none());
+    assert!(h.query_all_by_value("9").next().is_none());
+    assert_eq!(h.state().ui.crop_rect, frame);
+}