No, because Calibre tries to give you helpful info, however you - as the designer/user - needs to judge where this info is important. WPE is important for structures to be well matched, like, e.g., differential input transistors, current mirrors, any structure pairs/multiples where matching is important. This is not so much the case for IO structures, I'd think. If anyway, try to get around by keeping more spacing between the affected structure and its next well border.