Crash when using sign

When typing a sign game crashes when trying to go to next line

I don't know exactly what my device is but on MC:PE it says: LGE LGLK430

I cant get screen shot but i can get video if needed please let me know

If any more information is needed please let me know

i would also like to tell all the developers ''Thank you For creating a game that is addicting Keep up the good work''