Hi,
I found a variety of "grab_bars" tags:

toilets:grab_bars:left
toilets:grab_bars:right
toilets:grab_bar:right
toilets:grab_bars:rigth
toilets:grab_bar:left
toilets:grab_bars_right

The common and documented tag for this ist "toilets:wheelchair:grab_rails":
https://wiki.openstreetmap.org/wiki/Key%3Atoilets%3Awheelchair%3Agrab_rails

Could you check & change these?
