Yep. See my reply to the thread you started.
What calendar app do you use? It could be that.
Perhaps open Reminders.app and see how the reminder is displayed there.
Check out this post for instructions on how to add a reminder. It should pick up the text of the line that the cursor is on.
If you still have trouble, I suggest you make a screengrab of how you create the reminder, and we can troublesheet the flow.