diff --git a/plugins/SimulationView/SimulationView.py b/plugins/SimulationView/SimulationView.py
index c070c699394..2573c84cb9e 100644
--- a/plugins/SimulationView/SimulationView.py
+++ b/plugins/SimulationView/SimulationView.py
@@ -372,7 +372,10 @@ def setPath(self, value: float) -> None:
             self._minimum_path_num = min(self._minimum_path_num, self._current_path_num)
             # update _current time when the path is changed by user
             if self._current_path_num < self._max_paths and round(self._current_path_num)== self._current_path_num:
-                self._current_time = self.cumulativeLineDuration()[int(self._current_path_num)]
+                actual_path_num = int(self._current_path_num)
+                cumulative_line_duration = self.cumulativeLineDuration()
+                if actual_path_num < len(cumulative_line_duration):
+                    self._current_time = cumulative_line_duration[actual_path_num]
 
             self._startUpdateTopLayers()
             self.currentPathNumChanged.emit()
diff --git a/resources/definitions/fdmprinter.def.json b/resources/definitions/fdmprinter.def.json
index 31a67d01221..03850a7344e 100644
--- a/resources/definitions/fdmprinter.def.json
+++ b/resources/definitions/fdmprinter.def.json
@@ -6453,6 +6453,18 @@
                     "settable_per_extruder": true,
                     "limit_to_extruder": "raft_surface_extruder_nr"
                 },
+                "raft_surface_monotonic":
+                {
+                    "label": "Monotonic Raft Top Surface Order",
+                    "description": "Print raft top surface lines in an ordering that causes them to always overlap with adjacent lines in a single direction. This takes slightly more time to print, but makes the surface look more consistent, which is also visible on the model bottom surface.",
+                    "type": "bool",
+                    "default_value": false,
+                    "value": "skin_monotonic",
+                    "enabled": "resolveOrValue('adhesion_type') == 'raft' and raft_surface_layers > 0",
+                    "settable_per_mesh": false,
+                    "settable_per_extruder": true,
+                    "limit_to_extruder": "raft_surface_extruder_nr"
+                },
                 "raft_wall_count":
                 {
                     "label": "Raft Wall Count",
diff --git a/resources/setting_visibility/expert.cfg b/resources/setting_visibility/expert.cfg
index 2a71993998f..52c08f70ba2 100644
--- a/resources/setting_visibility/expert.cfg
+++ b/resources/setting_visibility/expert.cfg
@@ -340,6 +340,7 @@ raft_surface_layers
 raft_surface_thickness
 raft_surface_line_width
 raft_surface_line_spacing
+raft_surface_monotonic
 raft_interface_layers
 raft_interface_thickness
 raft_interface_line_width