GPencil Tools: fix scrub in multiframe display

Multiframe is now disabled while scrubbing viewport-timeline. (like normal scrubbing does)

greasepencil_tools/__init__.py

@@ -21,7 +21,7 @@ bl_info = {
 "name": "Grease Pencil Tools",
 "description": "Extra tools for Grease Pencil",
 "author": "Samuel Bernou, Antonio Vazquez, Daniel Martinez Lara, Matias Mendiola",
-"version": (1, 3, 0),
+"version": (1, 3, 1),
 "blender": (2, 91, 0),
 "location": "Sidebar > Grease Pencil > Grease Pencil Tools",
 "warning": "",

greasepencil_tools/timeline_scrub.py

@@ -201,9 +201,15 @@ class GPTS_OT_time_scrub(bpy.types.Operator):
         # Disable Onion skin
         self.active_space_data = context.space_data
         self.onion_skin = None
+        self.multi_frame = None
         if context.space_data.type == 'VIEW_3D':  # and 'GPENCIL' in context.mode
             self.onion_skin = self.active_space_data.overlay.use_gpencil_onion_skin
             self.active_space_data.overlay.use_gpencil_onion_skin = False
+        
+        if ob and ob.type == 'GPENCIL':
+            if ob.data.use_multiedit:
+                self.multi_frame = ob.data.use_multiedit
+                ob.data.use_multiedit = False
 
         self.hud = prefs.use_hud
         if not self.hud:
@@ -358,7 +364,8 @@ class GPTS_OT_time_scrub(bpy.types.Operator):
     def _exit_modal(self, context):
         if self.onion_skin is not None:
             self.active_space_data.overlay.use_gpencil_onion_skin = self.onion_skin
-
+        if self.multi_frame:
+            context.object.data.use_multiedit = self.multi_frame
         if self.hud and self.viewtype:
             self.viewtype.draw_handler_remove(self._handle, self.spacetype)
             context.area.tag_redraw()