Well, there isn’t much to your model. Certainly nothing that should make it behave strangely. You really do need to learn about using groups and components. All this loose geometry won’t help. Door swings should be components separate from the floor plan. If I were going to create this as a model I would first draw the perimeter and give it some thickness to create the floor. That geometry would be grouped. Then I would add the walls on top of it.
Save labels for LayOut. Certainly at this stage in your model there’s no need to label the rooms.
Start with learn.sketchup.com and get the fundamentals down.
Here I’ve cleaned up the geometry of the walls and also extruded them to 3D. I did not replace the door swings nor did I put headers in since I don’t know how tall the doors are to be. This should give you an idea, though.
CR original basic 2.skp (124.5 KB)