If you copy an Hyperlink "( https://de.wikipedia.org/wiki/LibreOffice )"
'_top' or '_parent' or '_blank' or '_self' from writer
into calc, the URL-String would be modified to the following Form:
"( https://de.wikipedia.org/wiki/LibreOffice" \t "_top )"
The Attribute Name is added at the End of the URL-String.
This bug comes also by copying the Hyperlink into a Textbox
in writer, impress and draw.
I reported this Bug in earlier Versions (BugNr.108318) and now it is
back from Hell.
I hope you can solve the Problem.
Thanks and Greetings
*** This bug has been marked as a duplicate of bug 108318 ***