I can reproduce this issue on my side. According to your description, I started the flow using the template you mentioned.
When an event created on Office 365 Calendar with Recurrence (Repeat) enabled, there is only one event created on the Google calendar. I found that there is a dynamic content for recurrence from Outlook Calendar, but there is no field for Recurrence on Google Calendar.
I would suggest you submit a request on Flow Ideas Forum about this issue and it might be considered a good addition for flow. I will suggest other customers who have the same request vote your idea at here: