2945514 - xmlextract function does not return result set or any error - SAP ASE

The following process doesn't return the result set or an error but we can see that issue could be related to function "xmlextract" since we can obtain the datalenght of variable "@xml":

1> declare @xml text
2> declare @tbl01 text
3> select @xml = t from txml
4> select datalength(@xml)
5> select xmlextract('/xml/sample', @xml returns text)
6> go
(1 row affected)

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     3026153

(1 row affected)
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• SAP Adaptive Server Enterprise (ASE) 16.0
• SAP Adaptive Server Enterprise (ASE) 15.7

xml, xmlextract, result, set, parameter, heap, memory, per, user, CR 822141, CR822141 , KBA , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , Problem