onChange not work on input with rows

I have in a form

writing in the field, no event fires

If I delete the option “rows:15”

All works fine
it is normal that this thing happen ?
What can I do to fix this?

Thank you for your attention

FF 45.0.1 OSX 10.11.3


known issue, please check here viewtopic.php?f=17&t=49956

Thanks Andrei !