A former employee of the business I work for (who retired a few years back) informed me that she wanted to change some money and get $10 bills. She was informed she had to use the ATM. She tried to argue her point, even to the extent that the ATM didn't have $10 bills - but it went nowhere. I was informed it was a Scotiabank branch she dealt with. And this was before the introduction of "select cash" ATMs, plus a few years before the ongoing pandemic.
There may be a logical explanation for this new trend. It may likely be designed to eliminate long lines and make services more efficient. I may even bring up that cash transactions for over-the-counter services may require an amount larger than the maximum for a single ATM transaction (in the case of Scotiabank, $1,000).
I notice that there have been more bank customers at the ATMs than inside the branch, but COVID-19 restrictions could be the reason why. I am thinking this may be a permanent thing, pandemic or no pandemic.
I'd say, whatever number of staff exist in a branch right now, that number will be permanent even after the pandemic. Over-the-counter transactions will likely have restrictions in which cash withdrawals will have to be a significantly large amount, otherwise the ATM is the route to go.
If bank policies are changing in which smaller cash withdrawals have to be strictly ATM only, and the trend that $10 bills are no longer being dispensed from ATMs, this could be the beginning of the end of our $10 bill as we know it, and may result in people hoarding tens - in case the day comes that they become scarce like the U.S. $2 bill (again, I do not draw comparison to our 50¢ coin because that denomination is long-defunct from general circulation).
Of course, it could be possible that there could be no more cash held inside bank branches (teller wicket, or secured cash dispensers), and all of the branch's money could likely be held in the ATMs on a perpetual basis. At least that could bring the number of bank robberies down in some form.