I first searched the forums for this issue.
A texture is missing on the Panther V D Late, a rail plate. On other Panther V D Late but with the plates arranged differently there is no problem. I don't use mods for these tanks. The other Panthers have no problem. I reinstalled the game, without mods, the problem persists. Graphics card is up to date.
View:
https://www.mediafire.com/view/29o4tlmhy3ys8me/Panther_bug.jpg/file