ios5 - Disabled keyboard state in iOS 6? -

ios5 - Disabled keyboard state in iOS 6? -

i have implemented "token" or "chip" text field similar stock messaging apps user enters entries become colored tokens. when user presses backspace, highlights token, , 1 more backspace deletes it. works great on ios 5.

on ios 6, however, 1 time tokens (uiview-based) highlighted, , phone call becomefirstresponder, keyboard becomes disabled seen below. when testing in simulator using "hardware keyboard", things still work fine, real user on device cannot press backspace 1 time again since disabled.

how 1 avoid this? calls/properties should looking for? in research unable find mode called or how used.

thanks!

ios5 uiview ios6 uitextview first-responder