This happens to me as well when I play on a new iMac Pro.

I'm unable to post a reply here: http://forum.square-enix.com/ffxiv/t...s-Resubmission

iMac Pro (2017)
Processer: 3 Ghz Intel Xeon W
Memory: 128 GB 2666 MHz DDR4
Graphics Card: Radeon Pro Vega 64 16368 MB

For me it seems to be random. Sometimes a couple of actions will load onto the hot bars and sometimes nothing. Items don't seem to have an issue but the config icons do. I've tried a myriad of graphics settings, updating router (thinking it was lag), windowed mode, full screen mode, etc.