Honestly, I haven't checked Events Booking with latest version of Joomla 4 yet. Currently, it's still in Alpha state, so I don't check Events Booking with Joomla 4 so often.
For now, we will leave it as how it's. When Joomla releases next alpha version, I will install latest version of Events Booking with that latest Joomla 4 version and make sure it works