Add Assignee not visible on mobile view

Hello everyone,

during mobile testing, our customer noticed that the action “Add Assignee” does not appear within the approval process. On the desktop version, on the other hand, the approver has the option to perform the Add Assignee action (For the same transaction). Do you know a similar case and why Add Assignee is not available on the mobile version?

Thank you very much!

Greetings,

Marco