Hello, have been using VATSIM with FS2024 career mode for a while. I do it in a way which is none disruptive i.e. use com2 to avoid getting off frequency and make sure that transponder is set to the VATSIM assigned value. It is a lot of fun!
Unfortunately since SU2 no Vatsim traffic is visible when running in career mode. It is visible in Free Flight. Clearly some sort of career mode issue.
Happy to try to code a fix if this is something that can be fixed on the vPilot client side, but not sure where exactly to start and who to reach out to.