Hi,
"I will fix that problem as soon as would have to time to do it."
The first time the problem have been reported, I've spent more than 4 hours making tests in order to reproduce this kind of problem, without success. I can't reproduce it so I can't fix it.
All tests made works good. After that, if there is some javascript errors, the required field check could not work properly.
It was not a message in order to say that the problem is not important. I have create an issue and I have already work on it a long time in order to fix it.
When the rest of the team would come back in order to help me for the support and development, I am sure that this issue would be fix faster.
If you want to send us a link to your store, we would be able to test it and see this problem in action.
For the moment, we can't reproduce it, it means that if we can't see it, we can't fix it.
So, help us will help you.
Regards,