The button that appears on mobile when using a brush on an armadillo reads "Arbusto" which means "bush" or "shrub", the brush item name was fixed before, however this was kept, it should be something like "Pincelar" or "Escovar".

Update (1.21.20.24 preview and beta):

1.21.20.24 changed all mentions of brush to "escovar", however one of them should be reverted to "pincel" since this is the brush name and not a word for when you use it like the tooltips, this one here should be changed back to "pincel": (sorry for the inconvenience)

item.brush.name=Escovar