Yes. OP got a recall, which gives you no warning and is relatively rare. More typical for a tight borrow situation would be a warning that the located shares have not yet been delivered the day before the deadline and that you would be subject to a buy-in the next morning if the locate failed to deliver shares. I got a call like this for one short position today. Then you can cover yourself that afternoon and avoid the risk or take your chances on a buy-in the next morning. IB will send you a warning message in TWS if they can, but a recall is out of their hands.Does anyone have forced buy-in experience? Look like rarely happens.
I will add that the shorter T+2 settlement schedule as of last month increases the risk to short selling since there is less time for the locate to deliver the shares (or for your broker to make alternative arrangements if their original borrowing source fell through).