I have two monitors and I like to keep my trays on one and the sketchup modeling window in the other. Just recently I've noticed that when the tray is not docked the images that preview the materials, styles, components, etc. are all blank. When the tray is docked they show up fine. I have the latest version of Sketchup 2018 and to my knowledge haven't had any updates recently. This just started happening. The only changes I've made are recently installing the TextureRandomizer and Cleanup3 plugins.

Images showing both conditions:

So this image should explain the issue pretty well. I'm using Sketchup 2014 with the newest Podium V2. I used the Texture>Position tool to align and scale all the textures. It works on all surfaces except this middle row. I've done the exterior as it's own wall at each floor of the building as opposed to one full facade. As long as the texture aligned it wouldn't be noticeable that I built the model that way in a rendering.

I even reset the texture to default for this whole piece and repositioned each face independently, but same thing keeps happing. Any ideas?