Missing component graphics - all icons, labels, and wire nubs not displaying?

Hi Grasshopper Community,

Components entered into the Grasshopper viewport are missing all identifying graphics - icons, text labels, and even the wire connection nubs. They are showing as blank rectangles but behave normally. As you can imagine, this makes creating definitions quite confusing!

Solutions I have tried (to no avail):

Installing/reinstalling both Rhino and Grasshopper

Zooming in & out

Selecting/deselecting "Draw Icons/Fancy Wires/Full Names" under the Display tab

What could be the issue here? The Grasshopper build version is 0.9.0076.

Please see attached .png for a screenshot.

Thank you all.