My peeve with the URL bar in Firefox on Android is that there's no way to partially select. A tap places the cursor, and a long press selects the whole URL. There's no way to select the domain, or a value from a query string, etc. Simply supporting the normal text editing gestures here would allow this, but the developers have gone out of their way to make it impossible.
I saw Unexpected Keyboard recommended here, turns out it can do this as well among other things. Just tap Shift and drag left/right on spacebar. The main feature though is that you can enter the characters that aren't used commonly by swiping insted of holding on a key or switching to a different key view. You can also get Ctrl and Alt and you can like lock them as well which is useful in Termux.
