Hi,
I confirm the feeling of a serious loss of security and accessibility.
I was using this feature quite smoothly since few months without any
problem.
I didn't lost my cookie access list. Only strangely Firefox came
accepting all cookies. (after upgrade)
Passing from "asking for all cookies"
Hi there.
After Firefox 44.0 was released, it turned out, that it lost the
cookie confirmation dialog, and upgrading to version 44.0 also deleted
all per-site permissions for cookies. It's a reduction of privacy
options, and also introduces some dataloss.
All this was achieved in Mozilla Bug