Same issue when your website opens a link in a new tab on mobile: many mobile users have no idea how to get back. The back button does not work and they don't know how to close/switch tabs. They're barely aware of the concept of a tab.
What mobile browsers actually have tabs that look like tabs? Honest question, I've only ever used firefox on android. If the others handle tabs anything like firefox does tabs are way more intuitive on a PC.
