Sure, theres a few here highlighting which ones it affects. They're mostly around Terminal 1. Terminal 5 doesn't seem to be affected at all.
Shows the mixture of some that are black and some that are textured correctly
There are two jetbridges at the gate, one showing correctly and the other without textures.
I've tried a reinstall but to no avail. Only addons i've got installed are Heathrow Xtreme, Gatwick Xtreme, VFR Airfields 1, Gen X South, Central and North, EarthSim TreeScapes South, Alderney and Real Environment Xtreme. Latest FSX version.