Did I push the wrong button somewhere, I have this same issue on A320 NEO. Found and old thread, now closed with no clear resolution. Thanks.
I have just rebooted the pc and loaded FS2020. I set up a short 4 hour flight in a320. I had ATC for a while then gone. I can call them and get the prompt to answer but I can’t see or hear their calls. I acknowledge and read back the instructions. That is the only way I can get the ATC Messages. I have not changed anything in my settings in windows, or FS2020. This seems to be a new undocumented feature in the last update. If anyone knows for sure or a fix I would appreciate the info. Thanks.