Improper SIGWINCH after return from tapped URL induced webView
After you tap an URL on the device, you get a webView where it tries to open it. When returning from this view, the bottom of a screen session (for irssi) gets hidden under the keyboard. The keyboard is also on top of the bottom few rows at this point.
Hiding and cycling the keyboard sends a properly sized SIGWINCH and everything works as expected again.
This should be fixed already a long time ago.
Please let us know if you have any other issues.