Does your feature request involve difficulty completing a task? Please describe.
Adjusting window position and size is hampered by not having a titlebar to control. There is a very tiny grab handle to the right of the search bar but this is the only place you can drag without using OS shortcuts.

Describe the solution you'd like
A toggle/argument as a preference for enabling a native titlebar for the application.

Describe alternatives you've considered
KDE Plasma's "No titlebar and frame" is already off so I cannot even force a titlebar onto the window manually.

Additional context
Using a manually compiled release build from master as the AppImages have the webkit2gtk-4.1 bug of not rendering for Linux.