See #5269. Minor tweak to show warning if object scaling detected.

src/bonsai/bonsai/bim/ui.py

@@ -446,8 +446,11 @@ class BIM_PT_tabs(Panel):
             op = box.operator("bim.open_uri", text="How Can I Fix This?")
             op.uri = "https://docs.bonsaibim.org/users/troubleshooting.html"
 
+        if not tool.Ifc.get():
+            return
+
         props = context.scene.BIMProperties
-        if (tool.Ifc.get() or props.ifc_file) and props.has_blend_warning:
+        if props.has_blend_warning:
             box = self.layout.box()
             box.alert = True
             row = box.row(align=True)
@@ -464,6 +467,14 @@ class BIM_PT_tabs(Panel):
             op = row.operator("bim.open_uri", text="", icon="QUESTION")
             op.uri = "https://docs.bonsaibim.org/users/troubleshooting.html#incompatible-blender-features"
 
+        if (o := context.active_object) and [round(x, 4) for x in list(o.matrix_world.to_scale())] != [1, 1, 1]:
+            box = self.layout.box()
+            box.alert = True
+            row = box.row(align=True)
+            row.label(text="Object scaling will be lost", icon="ERROR")
+            op = row.operator("bim.open_uri", text="", icon="QUESTION")
+            op.uri = "https://docs.bonsaibim.org/users/troubleshooting.html#incompatible-blender-features"
+
     def draw_tab_entry(self, row, icon, tab_name, enabled=True, highlight=False):
         tab_entry = row.row(align=True)
         tab_entry.operator("bim.set_tab", text="", emboss=highlight, icon=icon, depress=True).tab = tab_name

src/bonsai/docs/guides/troubleshooting.rst

@@ -116,6 +116,10 @@ incompatible features may result in data loss.
    unpredictable effects and changes may be discarded. Instead, always use the
    :kbd:`Tab` key to toggle object editing, or use the IFC Object / Edit mode
    toggle in the top right of the :menuselection:`3D Viewport`.
+2. **Object scaling**. Bonsai does not support scaled objects in IFC. Any
+   objects that have been scaled in object mode will have their scale reset to
+   1, and scaling an object may result in unpredictable operations. Instead,
+   scale objects within edit mode.
 
 Where is the add-on installed?
 ------------------------------