My Balance Druid uses the Glyph of Stars to give myself a spectral blue appearance rather than the regular moonkin form. I purchased the Spectral Pterrorwing mount from the Zandalari Empire quartermaster and I have noticed that when I use the mount, there are some weird visual glitches going on.
When the mount spawns, it appears like a regular pterrodax without the spectral effect for a fraction of a second. This does not happen if I use the mount outside of the Glyph of Stars form. Once mounted, the Glyph of Stars no longer looks how it is supposed to. Instead of the spectral effect, which is normally see-through, my character is now completely opaque with a blue tint.
I have tested it with a Shadow Priest and there doesn’t seem to be any similar issue going on with Shadow Form. The priest remains transparent with the void effect over it. I have also tried to use the Spectral Wind Rider with Glyph of Stars to see if anything similar would happen, but I keep my spectral form on this one.
It only seems to be specific to the Spectral Pterrorwing and Balance Druids with the Glyph of Stars.