https://bugs.winehq.org/show_bug.cgi?id=40163
--- Comment #7 from winetest@luukku.com --- fixme:d3d:wined3d_dxtn_init Wine cannot find the txc_dxtn library, DXTn software support unavailable.
Ubuntu based distros: sudo apt-get install libtxc-dxtn-s2tc0.
Don't know if it has any impact on this bug, but its still worth to install. The name varies from distro to distro.