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Also happens in Luria Vesperi, Dwilight. Not really a big deal, though.
Can you say which regions exactly, or make a screenshot, please?
Orbeh should be fixed now.
Ok, please try Dwilight again now.
I found two more of those thickened lines on the FEI Dynamic map:1. Between Anacan and Ansopen.2. Between Topenah and Arempos.Also, on the Diplomatic overlay, Arcaea, Sorraine and Cathay are joined together, with no border between them.