It works better than before now that it's its own tab rather than pop-ups. I did just get wiped out by an empire i didn't declare war on though so that wasn't fun, and some empires I just am not allowed to attack (the allocate and declare war button stays greyed out)
Also I didn't notice this before, but if i click on the cost of a research or legacy it also doesn't pop-up but just buys it, so there's no problem with that for me