Strange behaviour LBT components when no input is found

I have recently noticed that many components (HB model, HB assign grid, etc…) are shown in red with an error when they get an empty input A couple of examples in the attached pictures.
(i) Empty panel for the model name cause an error.
(ii) Aperture with empty geometry cause an error.

I have no memory that it was like that in the previous LBT versions, and it is a bit annoying because it forces to disconnect the components with empty inputs to be able to proceed in the workflow. Moreover, it also appears at a first glance that there are serious problems in the script when it is just an empty value.

Am I doing something wrong or is it a new introduced bug/setting?