Weird ATM Experience

My wife went to an ATM to get some cash. She walks up to the ATM and saw an account balance.  Odd, almost like the previous customer walked away with exiting a menu. She put in her card and took out $20. The new balance in checking was essentially what it showed before she put her card in the machine.

Her first thought and mine was that someone put a scanner on the front of the ATM. The cleek in the store spoke little English. Our online account showed the transaction she had just completed. 

I called the credit union.  After hours goes to somewhere with cheap labor but at least English sufficiently free of accent that he could well have been an American. 

He agreed it was odd, but he said some ATMs actually interrogate your card as you get close. Think of this as an aggressive tap card interrogation.  He had me turn on alerts for all accounts just in case.

Do any of you have aggressive ATMs?