I understand this is probably working as developed, but it's not working as expected on the user end. The year dropdown on the Hub's upcoming events/calendar card was confusing our users when (in 2019) they dropped down for 2020 and didn't see 2020. I eventually figured out that this is tied to whether there are any actual events in the future.
It seems odd that the months dropdown would show all 12 months, but the year dropdown is filtered. Just some feedback. Thanks