Receiver is Unknown in Portal CRM Call Logs for certain users

[reachgvm]

I have restricted access to "To" field in CRM Call Log through perm level for certain users. Frappe CRM uses this "To" field to resolve Receiver, and it could try to resolve with permission checking, but it does not. So the receiver field becomes Unknown instead of the Lead name.

But when I click the duration, a pop up window opens up, and there it shows the lead name though.

If Frappe CRM uses the same logic for the first Receiver field as well, this issue would resolve.