Whenever I register a flow that has a cron schedule it seems to immediately run all of the tasks upon registration. Is this expected behavior since my assumption was it should wait until the cron schedule condition is met before running.

Are you running it just locally? If so, then the schedule won't work as you expect, scheduling works only when registering/deploying your flow to the backend Can you share your flow code - perhaps you still have

flow.run()

within your code?