More than one visitor for conversions of the same visit

Support & Bugs
1

Hi,

I get surprizing results from the following query in our Matomo 4.15 database :

select 
	idsite,
	idvisit,
	count(distinct idvisitor)
from
	matomo_log_conversion
group by
	idsite, idvisit
having 
	  count(distinct idvisitor)>1;

It appears that there can be more than one idvisitor in conversions for a given visit !?
This prevents us from easily counting unique visitors for a given goal (without joining the visit table).

Are we the only ones experiencing this behaviour ?

We have similar issue on the link_visit_action table, thus preventing counting unique visitors on an event (unless we join the visit table again)