I have a large assembly and there are random surfaces that protude from the model (see below). Does anyone know the cause/how to fix it? Thanks!
I'd guess it's an issue with your graphics card.
Looks llike your Video card buffer has become corrupted. Can you select the sprouting geometry? If you can't, then that's a strong indicator that your GPU is having problems here.
Try restarting your machine.
Take a look at these two posts with similar issues & see if it helps.
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