Bitwarden login disappears

I’m using Bitwarden on a desktop PC running Windows 10 and Opera for a browser. I click on the Bitwarden icon then enter my user name and password. Bitwarden sends me an email with the access code in it. However, when I click out of Bitwarden to get the password, the dialog box disappears and I have to re-enter my user name and password. The workaround has been to open two windows, one with Bitwarden and the second for my email.
Is there a way to have the Bitwarden dialog box stay open while I get the email code? I know I can have Bitwarden save the password but feel safer getting the code every time. I suspect it’s a setting somewhere that needs to be changed but I can’t find it.
Thanks in advance!

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chrome-extension://ccnckbpmaceehanjmeomladnmlffdjgn/popup/index.html?uilocation=popout#/home