I did it today in both M&S and Heron Foods (fur coat and no knickers).
Stout, tweedy woman in M&S briskly turned it round. I nonchalantly turned it back, shunting her deli style coleslaw in the process. She harrumphed but left it...until I was busy packing and paying when she turned it and shot me a triumphant glance. Touché I thought.
In Heron Foods a young couple moved it, I moved it back they gave each other a
look and the man staged whispered "k'nell's her problem with the thingy?"