So I have been playing Timbersaw in current Dota 2 patch (not test version) and I got replicated by Morphling. I don't use any cosmetic items, except for Saw of Steam Chopper (as can be seen here and replica has Controlled Burn icon and error instead of claw and effects (as can be seen here

Error occured in match №2674904344 on 11.15 (by game time)