I mailnly travel on the District, Picidily and Circle lines and notice that
when some idiot wedges their foot in the door they all reopen. I had
assumed this was universal that all the doors reopen so other people can
board during the delay or because of cost cutting in the onboard circuitry.

Yesterday on the Central line I saw all the doors closing, then one door per
carriage (the 3rd from the front) all reopened and then closed.

Are there any other irregularities and why does this happen? What used to
happen when the open buttons on the doors were enabled?

Chris