diff --git a/gui/builtinStatsViews/resourcesViewFull.py b/gui/builtinStatsViews/resourcesViewFull.py
index 77d0b57553..234412d716 100644
--- a/gui/builtinStatsViews/resourcesViewFull.py
+++ b/gui/builtinStatsViews/resourcesViewFull.py
@@ -337,6 +337,8 @@ def refreshPanel(self, fit):
         labelTFT.SetForegroundColour(colorF)
         labelUCP.SetForegroundColour(colorC)
         labelTCP.SetForegroundColour(colorC)
+        labelUCP.Refresh()
+        labelTCP.Refresh()
 
         if fit is not None:
             resMax = (
diff --git a/gui/builtinViews/fittingView.py b/gui/builtinViews/fittingView.py
index 8df91591c7..5f261539d7 100644
--- a/gui/builtinViews/fittingView.py
+++ b/gui/builtinViews/fittingView.py
@@ -557,8 +557,19 @@ def generateMods(self):
         ]
 
         if fit is not None:
-            self.mods = fit.modules[:]
-            self.mods.sort(key=lambda _mod: (slotOrder.index(_mod.slot), _mod.position))
+            self.mods = [mod for mod in fit.modules if mod is not None]
+
+            def _get_sort_key(mod):
+                slot = getattr(mod, "slot", None)
+                try:
+                    slot_index = slotOrder.index(slot)
+                except ValueError:
+                    # During rapid fit switches we may briefly see transient modules
+                    # with unresolved slot references; keep UI stable by sorting them last.
+                    slot_index = len(slotOrder)
+                return slot_index, getattr(mod, "position", 0)
+
+            self.mods.sort(key=_get_sort_key)
 
             # Blanks is a list of indexes that mark non-module positions (such
             # as Racks and tactical Modes. This allows us to skip over common