Trouble using role grants with a procedure: ORA-00942: table or view does not exist

I'm using Oracle 19c and having trouble with a role grant to a procedure. It's as if the role grant has no effect. Below is a script which reproduces the problem. What am I missing? Best regards.

create user tsource identified by "Table Own3r";

grant create table to tsource;

create table tsource.t1 ( n integer );

create user tdest identified by "Table Us3r";

grant create procedure, create session to tdest;

create role tsource_role not identified;

grant select on tsource.t1 to tsource_role;

grant tsource_role to tdest with delegate option;

alter use tdest default role all;

select * from dba_tab_privs where grantee = 'TSOURCE_ROLE';