Repsonsive text not saving

not sure if this is a bug with current update. I setup a couple of items in the responsive text box. There was already the standard item in the section which I named H1, then setup a item for H2
However if I close my browser and then open again, go into the responsive text section, all tha remains is the H1 item, the H2 item has gone and was never saved? The responsive items I setup are simply not being saved, is this a bug?

Hey,

Thanks for writing in and we’re sorry to hear that you seem to be experiencing some issues with things at the moment. Could you provide to us the page link with this problem? Because I can`t find this issue.