So, the normal Brave Browser window that you would expect to see displayed, never develops from its minor appearance/pop-up located along the Task Bar?
Maybe search online for Windows OS Task Bar tips; also search for Windows OS multiple Desktops tips ← might one of the [unexpected?] Desktops be showing the Brave Browser window?
Sorry For The Late Reply, The Issue Persists After All
Even Beta And Nightly Build Shows The Same Result
Which I Think Should Be Case If Something Specifically Affecting
The Brave Browser Regular Build