Better Protection for Login Data on Firefox for Android?

Across the Desktop, Android and iOS versions of Google Chrome and Android, Firefox for Android is the only browser that allows viewing the list of saved passwords even when a master password is set. Specifically, the master password is requested when first starting the browser, but once the browser is in use, it will not be requested again.

Is there a way to get a behavior that is more in line with Chrome / Firefox on other platforms?