This is the same thing as Tula and the lacquer "melting" myth is just that. The only problems people have had was in .223 AR's and it has to do with the metal casing not expanding as much as soft brass and in doing so not creating a tight seal. This allows carbon to build up more than usual and in large volume shooting the case gets cooked into the carbon buildup. Again this is only reported in some AR's mainly due to the DI system making a mountain out of a mole hill and tight .223 chamber tolerances. In a Glock, or any other pistol, this won't be an issue. I've shot Wolf/Barnaul/Tula/Brown Bear etc. nearly exclusively for plinking in a variety of pistols and never have had any problems.
BTW Wolf is the main clearing house of Russian ammo. Russian ammo mainly comes from the Ulyanovsk factory, Tula factory, Vympel factory (Golden Tiger only) or the Barnaul factory under the names of Brown Bear, Golden Bear, Silver Bear, Golden Tiger , Tula, Wolf, and Monarch (for Academy Sports).