Heavy steel elevated support icon flickers on zooming

[209CATrus]

Heavy steel elevated support icon, third on the  screenshot, flickers when game gets zoomed in/out using mousewheel. Flickers everywhere - in rail construction menu, in road construction menu etc.
If there are multiple instances present (i.e. road construction menu and rail construction menu are opened at the same time), only one will flicker.
Thankfully doesn't crash anything.

OS: Linux Mint, latest one