Yahoo released messenger 10 Beta for Testing. You can
download it from here. But it is not yet fixed for Input Punjabi
language from keyboard, but only with v irtual typing window
attaching screenshot how its looks like (just like previous stable
Input in typing Box – FAILED, only square box
Text Rendering in Messages – PASSED, Rendered properly
Red Color Underline Text is Punjabi with typing Box and Message window.
It is hard to believe that after so many years yahoo yet has not do single update for this.