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The overlap is not a problem as far as having the PCB green-board made. There will just be no soldermask everywhere you see the purple.
This could be a problem when you have the boards populated, because solder bridging is more likely.
When the pads are closer together than the manufacturing process can handle, there is no other way. Especially for 0.4mm pitch and similar really fine pitches.
It probably makes shorts between pins a bit more likely, so check capabilities of your board h
A good piece of info for learning.
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