I have the same question regarding the “new tab” page setting. I have the “new session” set to a specific page but that seems to only address a specific page loading when ASB is first opened. Once opened and a new tab is selected the default ASB page is loaded. I’m I missing something in the settings?
If the “new session” setting in ASB only applies to the initial page when the browser is opened, but not to subsequent new tabs, you may need to check for additional settings within ASB to customize the new tab page.