Why does a hyperlink stop working when I add a row above it?

If a row with a hyperlink moves up or down the hyperlink stops working. Why?

If you want an answer you should give information.

Is your hyperlink in a Calc sheetcell or in a texttable or where else?
By what action on your behalf is the hyperlink caused to “move”?
Is it a hyperlink explicitly inerted with the tool?
Is it an autoamtically recognised link? If so: Does it change its appearance when “moving”?
Is it a linked cell in Calc created by the HYPERLINK function?
Under what conditions does the hypertlink move up if you insert a row abowe it?