Transfer Podcast using MacOS Catalina and Garmin Express

Does anyone knows how to transfer Podcasts to my Fenix 6 using MacOS Catalina? I do not wanna use Runcasts or Spotify. When connecting the watch to my Macbook and launching Garmin Express, I can navigate to Music, load the Podcasts I have and select the ones I want to transfer and press sync. I get an ok message and when browsing Podcasts on the watch in Garmin Express, the podcasts is listed there but as soon as I disconnect the watch and open up My music on the watch, it just says No Podcasts available. 

Is this a known issue when using Catalina? Does it work with previous versions of MacOS (eg that has iTunes and not the new Music / Podcast app)? Is there a way to get the watch to show up as an external drive and just drag n drop? Had to use a virtual machine running Windows just to transfer some podcasts as for now.