I also had this issue with MEGA until someone here told me that I needed to activate an option in Raidrive. I don’t understand why this option is not always activated by default as it’s definitely ultra useful. I had tons of issues for 2 months with files not updating (on my mounted cloud drive). Since I activated that : it works perfectly for 3 days now. So great.
Anyway, disconnect raidrive and in the settings of your Raidrive cloud storage connection, (GEAR icon / Edit), activate :
Update Storage Changes asynchronously.
Reconnect Raidrive and it should all be fine now.
Hopefully it’ll do the trick for you as it did it for me.