According to a new independent review of UK based Co-operative Bank by Canadian central banker Mark Zelmer banks runs in the digital age could become complicated and rapid; the onset of open banking, which allows third parties to be between the depositor and institution, could increase the speed at which banks runs occur; at the first sign of serious trouble their could be a bank run from many different directions with the third parties helping to speed this up as they would not want to be associated with a trouble firm; while the money might leave a certain bank it would not be leaving the system entirely, as would happen with traditional bank runs, and so digital bank runs would still keep money within the banking system. Source.
