[d87]

that's an old bug, you have to set model again after hiding

local Redraw = function(self)
    if not self.model_path then return end

    self:SetModelScale(1)
    self:SetPosition(0,0,0)

    if type(self.model_path) == "number" then
        self:SetDisplayInfo(self.model_path)
    else
        self:SetModel(self.model_path)
    end
    self:SetModelScale(self.model_scale)
    self:SetPosition(self.ox, self.oy, self.oz)
end

local ResetTransformations = function(self)
    self:SetModelScale(1)
    self:SetPosition(0,0,0)
end

local pmf = CreateFrame("PlayerModel", nil, UIParent )
    pmf.model_scale = 1
    pmf.ox = 0
    pmf.oy = 0
    pmf.oz = 0
    pmf.model_path = "..."

    pmf:SetScript("OnHide", ResetTransformations)
    pmf:SetScript("OnShow", Redraw)
    pmf.Redraw = Redraw
    pmf.ResetTransformations = ResetTransformations
    pmf:Redraw()