I have discovered that if I use the field directly in the Power BI Service it works, but if I publish from Power BI Desktop (which is our standard practice here so we can put our reports in Source Control), then it changes the time to zeros.
Is anyone else publishing a date/time field from Power BI Desktop and if so, can you check your time to see if it is showing zeros?
@mvoss12 I also noticed similar to your issue. When publishing from power bi desktop even when datetime was selected and not as hierarchy in power bi service it converted and showed it in hierarcy. I would report this issue here.