OK...This is my 4th clutch and I hadn't seen this happen before. Note the wet spot on the top egg.

The background - sealed egg boxes, near 100% humidity, laid 3 days ago, no condensation near this egg (some on the box sides but minimal), incubation temp 87.5. All eight eggs candle fertile.

Any ideas why this is happening? Is it an issue? How to fix?

Thanks in Advance