This is not normal behaviour of Elecard plug in. Probably there is a some third directshow component is used instead of Elecard Component. This is just assumption.
In order to check that, we recommend you to install the Graph Edit application and try to reproduce the broadcast receiving.
In case you will notice some third component in the graph chain, that will be the confirmation of such assumption.
Feel free to contact Elecard TSup Team firstname.lastname@example.org