In Book1 Sheet1, fill it with data.
Copy all data.
Add a new sheet, paste link to A1.
Drag Sheet2 out to be a new book.
Check link address in any cell.
==> It shows cell://Sheet1!A[1], which should be cell://[Book1]Sheet1!A[1]
Issue existed since Origin 2026 and fixed in Origin 2026b SR1.