Deployment error - sum function

Dear Developers,
the sum function should work with nodeset compiled with “|”.
See: “Nodesets can also be created by joining two or more nodes with pipes: /data/age | /data/name.” https://docs.opendatakit.org/form-operators-functions/#repeat-groups
Example:
SUM 01.xlsx (10.3 KB)
It is working well on Enketo (form preview) online, but creates an error on deployment.
Error:
image

Similar problem with other functions, like max and min. See Deployment error - max function

Same error with parser on:

Update:
Stephane find out, that it is working with “,” instead of “|” as separator. Deployment error - max function

Kind regards
Wolfgang

FYI @Xiphware and @Kal_Lam

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