Rarely, but happens (my experience with the MnM). Two answers:

The funny one:

“Get one more!”

The sad one: “These machines are really complex, why did you guys from Elektron did this bad thing to us?!” :stuck_out_tongue_winking_eye:

I am really curious, as it is annoying - no way to expand it or just play with the locks a bit more in order to reduce their number?