[Felt privacy] White space whenever we leave overlay mode on private homepage

Steps to reproduce

• Have felt privacy enabled
• Open a new private homepage
• Open and close the keyboard by entering and leaving overlay mode (by clicking the url bar)

What happens

• Observe the white space, it’s annoying

Expected behavior

• We don’t see white flicker, or at least a background of another color that is less annoying

:information_source: Reference Person

@Foxbolts

┆Issue is synchronized with this Jira Bug