There are a few scenarios not showing as completed despite me finishing them with gold medals. In addition to the ones shown in the screenshot there's also "Highspeed Run" in the 395.
Also noticed that "Power Changover Introduction" was not shown as completed. I think the common thread to these un-checked scenarios is that I completed them outside the Journey mode. So, the problem seems to be that if you complete the scenario through the training center or the scenario picker, it does not show as completed in the Journey mode until you select and complete it using the Journey mode menu.
Thats expected behaviour as it was in TSW2, TSW 2020 and TSW - to complete in journey mode you have to do it in Journey Mode. This is due to the locked weather conditions. Personally - I think training/scenarios where the weather is locked anyway should count wherever you do them, but yes, if you want it to show in journey, have to do it in journey...