Hi jchapman84
Do you have reCAPTCHA installed/activated/keys entered?
kcguy, we're working on fix this issue as soon as possible.
As far as we know:
It has something to do with reCAPTCHA,
it has something to do with mobile devices (I wasn't able to reproduce it on desktop).
It's more frequent on safari browser, but android's browser and chrome also reported to fail.
Problem is that each form has a one-use-only CSRF token (as anti-hack measure), in this case, the form is being submitting TWICE (so if you hit publish or login , you will get an error because the second submission failed, but the first one was ok, so if you reload, the item would be published or you would be logged).
We're not sure, how if you only click once in the button, the form is being sent twice. Since the same page would fai on mobile devices but not on desktop, it looks like a browser problem, but still, we're working on it with all our resources.
Thanks for the patience.