diff --git a/notes.md b/notes.md
index 9a1d4ba6..f342ca0a 100644
--- a/notes.md
+++ b/notes.md
@@ -17,9 +17,9 @@
 
 # FDM
 
-* `B` large # linear points with linear infill (belt only?)
+* `B` client/worker cache invalidated by latest rotation work
 * `B` fix adaptive slicing with multi-extruder
-* `B` fix supports with grouped parts
+* `B` fix support projection/end with grouped parts
 * `B` multi-extruder rendering of raft fails to offset the rest of the print
 * `B` multi-extruder purge blocks fail to generate properly for rafts
 
diff --git a/src/kiri/main.js b/src/kiri/main.js
index 8bc14cc7..26fd3870 100644
--- a/src/kiri/main.js
+++ b/src/kiri/main.js
@@ -1751,7 +1751,12 @@
         if (isBelt) {
             let bounds = platformUpdateBounds(),
                 movey = -(dev.bedDepth / 2 + bounds.min.y);
-            forAllWidgets(widget => widget.move(0, movey + 5, 0));
+            forAllWidgets(widget => {
+                // only move the master widget in the group
+                if (widget.id === widget.group.id) {
+                    widget.move(0, movey + 5, 0)
+                }
+            });
         }
 
         platform.update_origin();