Recently I had this issue pop up where many textures that should not be transparent are. I don't know if it was after a driver or game update as I have been playing this game off and on and I could swear I’ve played it without issue since I upgraded my graphics card. I know it’s a recent thing. I did recently update my graphics from two EVGA GTX 680 FTW 4gb cards in SLI to a single EVGA GeForce RTX 2080 Ti FTW3 Ultra Hydro Copper Gaming. Whole system was already on water and still running the same overclocks on memory and CPU, new card is still at stock clocks. all my stuff is up to date and I play a wide range of stuff from this to DCS, battlefield, call of duty, GTA and many more without issue.
My troubleshooting so far has been to reset all settings to default in game and in nVidea. Reinstall drivers, restart computer. Cleaned up old registry stuff to kill redundant or unused old processes. This is the only program that I am having a problem with.
The screenshots are in offline practice but its the exact same in the arenas.
May try to reinstall AH.