I have this problem too on Ubuntu.
I can't choose pantheon, no pop up, after click to pantheon button.
I can end turn by shift + enter, but no pantheon and religion for all game.
I have same problem if enabled Pantheon Exploit Hot Fix.

I see no difference between Mac, Linux and WIndows front end interface.
Sorry, but I don't know how to solve your problem.
Hope, if you press to button by the mouse, it'll be work fine.

GraSpinGovich> Tested in different scenarios! It is broken for Linux and Mac... I ended turn many times with <shift> + <enter> and pantheon dialog isn't popping up... in bottom right corner is prompt, select pantheon and when I click it, nothing happen. I assume Mac and Linux has different keyboard event handling than Windows game.

Popup could not be appear, if someone of else player , that higher than you in lobby, take a chance to select pantheon in this turn.

Not working for Mac and Linux users... pantheon popup not showing and you can't pick pantheon and religion.

Still, CPL community worked hard at its mod.
That's great, we can use their fies for vanilla game.

CPL is actually useless.... this mod introduces new and even worse exploits. This is the reason more and more people don´t take CPL anymore serious.

General that's not my work, thank CPL masters for this files, I'm just copied them and publish for vanilla game.

It's ridiculous that it takes ages for the devs to fix such things on their own. Thank you for your work.

Stucking science and culture. As consequence, there are no unlimited swap of political courses and cheap districts.
No more unlimited stack of 1 pantheon (+100 production from God of sea, as example).
Units no longer save the damage received, when rising under the general at the turn of the eras.

Which "bags" does it fix?