You found a bug. I filed CDS-37548
in our jira bug database.
If you're working for an OEM (PLC Vendor), you can contact our support department to register your customers name for that issue. If you're an end-user (codesys came shipped with a PLC you bought somewhere), you may contact your PLC Vendors support department with the above number, so they can create an entry in their database and link it to our CDS-37548
As a workaround, you can re-set the accessor generation setting to the same value:
This will regenerate the accessor POUs.
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