It is the default path. We redirect to a mapped drive via Group Policy setting. (against best practices, I know, but it's better than roaming the OST file which causes login issues).
Citrix UPM overrides the GPO settings and forces the OST back to the default location.
This happened with 2203 CU2 for sure. I think it also was being done in a CR release, but I don't know which off-hand. We have a hotfix for 2203 CU2.