Using iOS 18.3

When posting an event to multiple groups the modal doesn't close after the green arrow has been pressed so it isn't possible to see that the post has been sent.

I saw the post appeared in a small gap between the modal and the group banner. So I clicked that and the warning message was displayed saying the post couldn't be found. After clicking ok and then navigating to the groups, the event was shown as expected.

This resulted in repeated posts to all of the groups.