I don't think it's only cosmetic.
I had similar lift in my old Yamaha.
I continued playing and within a year, it was lifting much more causing it to go out of tune.
It was ready to come out.
Fix it asap.
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Acoustic-Electric: Yamaha FGX800C, Jim Dandy. Seagull S6.
Electric: Schecter C1+, Aria Pro II Fullerton.
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