Have you already tried to change the region?
I had the problem yesterday too as <i started new under 1.20. after receivign B&W.. but my Roach nhad no tail only in the tutporial map region, ocne i came to velen, he suddenly had its tail back...
PSS: i hope also that this game receives with one of its last patches before they completely stop with patchign this game a serious Balancing Patch, that rebalances alot ov overpowered thigns, while makign the felt 90% of useless skills/decoctions and so on more useful, while also addign especialyl alot of missing Potions/Decoctions...
once shpudl belive, that Geralt should be able in this game to make of every creature a Decoction..so manyx missing
Hym Decoction
Cyclops Decoction
Sylvan Decoction
Gargoyle Decoction
Ice Giant Decotion
Harpy Decoction
Fire Elemental Decoction
not to mention all the missing creatures they addec with the expansions
And not to mention the tons of missing potions Gerald had in Witcher1, which suddenly seem not to exist anymore now in Witcher 3. Kind of sad to know, that the game will most likely stay in this unfinished and unbalanced state i guess...