I've had this happen a couple times. I think it happens most often when you're editing a build for a different hero and are called in for another hero. In this instance, I was editing a build for Paige then connected as a doorman. As a result, I lost the selected build for doorman.
There's probably some issue where the game sends a signal to delete a build when it's not supposed to, or there are a bunch of builds running around in an SQL server that are just unassigned to anyone but floating.
There's probably some issue where the game sends a signal to delete a build when it's not supposed to, or there are a bunch of builds running around in an SQL server that are just unassigned to anyone but floating.
