I think it is a failsafe. Some older BMW's do the same thing. If you hold traction control button for too long, it
re-enables traction control and disables the button until vehicle restart.
Supposedly, someone might engage that with a knee or random object poking the button.
Or switch malfunction. In that case, it enables the system and disables the switch.
On the other hand, some other BMW's engage santa-mode. Disables not only slip control but also skid control. aka drifting time.
But additional indicators light up in that case.
Short range EVs <30kWh -- Medium range: 30-60kWh -- Long range: >60kWh
Charging: Trickle <3kW -- Normal 3-22kW -- Fast 50-100kW -- Supercharging >100kW