In addition, we received a lot of feedback about the dialog box, “Querying transaction count”, we introduced back in SSMS 18.11. In 18.12, we added an option to cancel the check if it took more than two seconds, but user comments indicated that was not enough. Therefore, in SSMS 19.0 you have the ability to disable to dialog box completely. Within Tools > Options > Query Execution, simply uncheck the option “Check for open transactions before closing T-SQL query windows”.
That alone might be worth it, especially if you work via VPN and have a bunch of SSMS tabs open.