Player riding a beefalo can become black and gain 35% water resistance when being near trees.

Player riding a beefalo can become black and gain 35% water resistance when being near trees. Unlike in DST, the component "sheltered" is not used at all: (compoent rider line 80-82, 150-152)

    if self.inst.components.sheltered ~= nil then
        self.inst.components.sheltered:Start()
    end

    if self.inst.components.sheltered ~= nil then
        self.inst.components.sheltered:Stop()
    end

My suggestion about fixing this problem (put the following code into component Moisture:CheckForShelter():

if self.inst.components.rider ~= nil and self.inst.components.rider:IsRiding() then
   return
end