I am playing on [4.2.3 Open beta] [ba73] without any checksum changing mods. I created this bug reports, but i feel devs will skip part of them.
Feel free to check them. Maybe we should wait until they release current beta into live, so they will fix at least something.
I created a new Discusssion to keep the comments section clean.

https://forum.paradoxplaza.com/forum/threads/stellaris-4-2-3-ba73-thermophilic-evolution-doesnt-provide-heat-resistance-for-level-5-critical-mass-effect-for-non-infernal-species-and-dev.1882808/
1) Empire suicide. Critical game designer fail.

https://forum.paradoxplaza.com/forum/threads/stellaris-4-2-3-ba73-conduits-resets-deposits-on-star-instead-of-adding-them.1882823/
2) Very annoying

https://forum.paradoxplaza.com/forum/threads/stellaris-4-2-3-ba73-new-crisis-ships-requires-alloys-to-be-upgraded-nemesis-and-nanite-ships-are-free-to-upgrade.1883354/
3) Annoying unpolishment, waste of alloys

https://forum.paradoxplaza.com/forum/threads/stellaris-4-2-3-ba73-terraforming-planets-into-volcanic-using-volcanic-foundry-from-planet-forgers-civic-doesnt-count-as-terraforming-for-the.1883324/
4) Losing cool synergy between civic and crisis

https://forum.paradoxplaza.com/forum/threads/stellaris-4-2-3-ba73-cant-terraform-my-own-planet-into-volcanic-using-smelter-colossus-after-i-synthetic-ascended-without-infernal-trait.1883302/
5) Ctrl+C Ctrl+V without polishing feature

https://forum.paradoxplaza.com/forum/threads/stellaris-4-2-3-ba73-crucible-overclocking-mod-choice-is-reseting-to-default-when-you-load-save-file.1882828/
6) A little annoyance. Bad if you don't even know about it.

https://forum.paradoxplaza.com/forum/threads/stellaris-4-2-3-ba73-entropy-conduits-removes-stars-nameplate-from-star-instead-of-simply-adding-deposits.1882804/
7) Confusing bug