Taking way to long to deal with menu on Upfront

Hi, It is taking way too long to deal with menu system on Upfront, it appears and disappear and some times I edit it and it does not respond well or in real time. Menu feature is with a lot of bugs. Are you guys aware that? Do you guys have an ETA to fix that? The access it already granted on my site, you can test it as you want over there. Thank you!