A few I have found so far...

Closing the ideology screen brings up the research tree (full version) at the beginning of the game (before picking the first tenet) with a custom race

The search tech tool does not reset after starting or loading a new game (restarting the game does)

Diplomatic stance typo: "You are trading with an infadel"

Colony status icons slighly wobble after moving the map (stabilizes after a second or so)

Strategic view: icons aren't visible enough if the player chose a dark color (eg: gray) Probably related to using an old saved game (.83)

Alt+Tabbing in and out of the game CTD (alt-tabbing to check for details while writing this), no debug.err related log or crash dump

Intuitive trait does not work (On .83 I got to select multiple techs on turn one, but now it doesn't)

Edit:

Some of the bugs seems to be related to using an old save game or a custom race I made for .83 (Even if I copied the race and "edited" it)

Replicating the custom race with the same traits does work