dapp-core does not use erdjs' transaction watcher / completion detection mechanism - it directly queries the status from the API, instead. I will check tomorrow with my colleagues for other ideas on this (while it might be caused by a erdjs v10 vs v9 mismatch, it isn't obvious why).
@tanejamohit4, is the issue reproducible? Did the toasts / popups close at some point?
No, it remains on the screen and getting stacked after each transaction.