diff --git a/src/kiri/init.js b/src/kiri/init.js
index 33288e06..183875d0 100644
--- a/src/kiri/init.js
+++ b/src/kiri/init.js
@@ -1998,10 +1998,10 @@
 
         API.platform.update_size();
 
-        SPACE.mouse.onHover((int, ev) => {
+        SPACE.mouse.onHover((int, ev, ints) => {
             if (!API.feature.hover) return;
             if (!int) return API.widgets.meshes();
-            API.event.emit('mouse.hover', {int, point: int.point, type: 'widget'});
+            API.event.emit('mouse.hover', {int, ints, point: int.point, type: 'widget'});
         });
 
         SPACE.platform.onHover((int, ev) => {
diff --git a/src/kiri/slicer2.js b/src/kiri/slicer2.js
index 3b68fbe9..ff27a737 100644
--- a/src/kiri/slicer2.js
+++ b/src/kiri/slicer2.js
@@ -611,6 +611,7 @@
         // emit a polygon if it can be cleaned and still have 2 or more points
         function emit(poly) {
             poly = poly.clean();
+            if (poly.length === 2 && opt.openok) poly.setOpen();
             if (poly.length >= minPoly) output.push(poly);
         }
 
diff --git a/src/mode/cam/client.js b/src/mode/cam/client.js
index 7b879be7..6de4a38d 100644
--- a/src/mode/cam/client.js
+++ b/src/mode/cam/client.js
@@ -37,13 +37,18 @@
             $('set-tools').style.display = isCamMode ? '' : 'none';
             kiri.space.platform.setColor(isCamMode ? 0xeeeeee : 0xcccccc);
             updateStock(undefined, 'internal');
-            if (!isCamMode) func.tabClear();
+            if (!isCamMode) {
+                func.tabClear();
+                func.traceDone();
+            }
         });
 
         api.event.on("view.set", (mode) => {
             isArrange = (mode === VIEWS.ARRANGE);
             isAnimate = false;
             CAM.animate_clear(api);
+            func.tabDone();
+            func.traceDone();
         });
 
         api.event.on("settings.saved", (settings) => {
@@ -142,6 +147,10 @@
             delbox('tabb');
             api.hide.alert(alert);
             api.feature.hover = false;
+            if (lastTab) {
+                lastTab.box.material.color.r = 0;
+                lastTab = null;
+            }
         });
         api.event.on("cam.tabs.clear", func.tabClear = () => {
             func.tabDone();
@@ -269,6 +278,9 @@
                 lastTrace = null;
                 return;
             }
+            // if (data.ints.length === 2) {
+            //     console.log(data.ints);
+            // }
             lastTrace = data.int.object;
             let material = lastTrace.material[0];
             let color = material.color;
diff --git a/src/mode/cam/slice.js b/src/mode/cam/slice.js
index 1c0ad1c2..0f8e09e3 100644
--- a/src/mode/cam/slice.js
+++ b/src/mode/cam/slice.js
@@ -538,13 +538,15 @@
             .sort((a,b) => b - a);
         let traces = [];
         slicer.slice(indices, { each: (data, index, total) => {
-            let slice = data.slice;
-            traces.push(slice);
-            if (true) slice.output()
-                .setLayer("trace", {line: 0x88aa55}, false)
-                .addPolys(slice.topPolys())
-            // updateOp(index, total);
-        }, genso: true, emptyok: true, flatoff: 0, edges: true, openok: true });
+            // create separate slice for each poly (and inner)
+            BASE.polygons.flatten(data.tops,null,true).forEach(poly => {
+                let trace = KIRI.newSlice(data.z);
+                trace.output('trace')
+                    .setLayer("trace", {line: 0x88aa55}, false)
+                    .addPoly(poly);
+                traces.push(trace);
+            });
+        }, flatoff: 0, edges: true, openok: true });
         widget.traces = traces;
     };
 
diff --git a/src/moto/space.js b/src/moto/space.js
index 32f46b96..0c2d5745 100644
--- a/src/moto/space.js
+++ b/src/moto/space.js
@@ -710,7 +710,7 @@
             let selection = mouseHover ? mouseHover() : null;
             if (selection && selection.length > 0) {
                 int = intersect(selection, selectRecurse);
-                if (int.length > 0) mouseHover(int[0], event);
+                if (int.length > 0) mouseHover(int[0], event, int);
             }
             if ((!int || int.length == 0) && platformHover) {
                 vis = platform.visible;