I figured it out. Known issue with Studio v2019.10.3 and specifically the Select Item activity. Replacing Select Item with Select Multiple Items fixed the issue, and apparently upgrading to at least 2019.10.4 would also solve the issue.
I figured it out. Known issue with Studio v2019.10.3 and specifically the Select Item activity. Replacing Select Item with Select Multiple Items fixed the issue, and apparently upgrading to at least 2019.10.4 would also solve the issue.