X axis shadowy looking bars

What would cause these dark shadowy bars where it says FCC? Any help would be appreciated.

That looks like the grain in the wood.

Edit: Pardon me, I see what you mean now.

Thinking!

FCC

What does the job look like in Preview.

Do you see anything other than the font/letters.

Could you post a copy of your .lbrn2 file so we can take a look? This is on the Trocen-controlled boss laser you have in your profile?

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