I found this through the Reddit post and have been digging it, although some icons have been too small for me.

Bugs:

1. To be pedantic, the opening title when first launching the game doesn't actually say "Click anywhere to continue"
2. Going full-screen prevents custom CursorFX mouse cursors from showing. Alternatively, just force entirely custom mouse cursors with awesome graphics for this great game 😍
3. Add descriptive mouse-over popups for wave rewards
4. The "NEXT TURN" button should not have a celestial animated highlight while there are still dice that you can use (IMO)!
5. When starting a game in full-screen, the first loading screen is still windowed

EDIT: I found a significant screen-rendering bug which can be duplicated as such:

1. Play Circadian Dice in full-screen
2. Use ShareX's "Capture region" hotkey to open a screenshot preview
3. ShareX fails to render properly and draws a white screen in the preview and Circadian Dice goes nuts. Resolution-wise, CD looks like it changes to occupy a size corresponding to windowed mode, but mouse-wise it still seems to think it's in full screen.

Suggestions:

1. Could Alt+Enter be enabled as an instant full-screen/windowed switcher?
2. Put the "Install upgrade on a die!" text prompt lower, like around where the "NEXT TURN" button is, for easier visibility
3. Add an option to make descriptive popups show immediately, Slay the Spire-like
4. The buttons to end your turn/keep dice are too small
5. Keyboard shortcuts to play with the dice mouse-less would be great, like 1-4 for dice selection and then arrow keys to select targets. So "Keep" would need a keyboard shortcut (ideally user-customizable). I also don't actually remember Space Bar being mentioned in the tutorial for "Re-roll" and such, though I may have missed that
6. It's a little bit confusing to have to click-drag attack-dice to enemies, but to have to click and then click again to use offensive abilities, and similarly for dice upgrades. Could we get both or neither? Or make these styles a settings option decided on by the user?
7. Add to chain description: "... ALL faces of this roll," so that it's clarified that previous re-rolls in the current turn don't add to the chain, since I didn't understand how it worked until I rolled two chained dice.
8. I would appreciate rolled dice to be larger than the dice faces at the bottom. That way I don't have to be as careful about mouse-clicking. Slay the Spire card sizes come to mind (they don't need to be that large, but somewhat larger would be nice).