When updating from Brave 1.5.1 to 1.5.2, the automatic full screen didn’t work.
I also own the iPhone 5s, but when using Brave 1.5.2 there was automatic fullscreen possible. I uninstalled Brave. And I reinstalled Brave after restarting the iPhone SE. However, it did’t improve. Next I updated to iOS11.2.1 and tried reinstalling in the same way. After all it didn’t improve.
I’d like you to make this fix early.