Hi @Hiroshi Matsumo ,
PRB1804838 seems to be related to your issue. (refer to the below KB article)
https://support.servicenow.com/kb?id=kb_article_view&sysparm_article=KB1705523
This problem fixed in Xanadu Patch 5.
So if the content of this KB article matches your issue, updating to Xanadu Patch 5 might resolve it.
Xanadu Patch 5
Thanks.
