Found some more bugs, though some are hard to describe repro or may be difficult to repro.
1. Sometimes tiles which are under attack by enemies remain locked in that state even after all ships are gone.
2. Some tiles in my game are messed up. They have a development on them, but the development is invisible, so it looks like Plains, however, clicking shows the real development. When the tile is destroyed by an enemy, the plains tile does not disappear, as in visually there is still a sprite drawn on that tile, but the ships pass through. I would guess that a zombie plains sprite is being drawn on top of the real sprite. I can share with you my save file in which at least two tiles are like this if you tell me how. If I had to guess, I'd say this happened during the save/reload roundtrip.
3. I discovered that enemy ships will stop and fire at the castle if they are in the wrong row. That's neat, but something is wrong with the mortar AI when this happens. I was seeing a red mortar square shooting at the castle when there were no enemies in range. I assume that meant a mortar was shooting at it, but couldn't catch a mortar actually being fired at the castle (I could have missed it).
4. Whenever you "Continue" a game, you get the level up (new population reached) screen and a beginning tutorial tip.
5. While loading a continued game, it shows buttons for placing your castle and port, and to reroll the map. It should probably stay blank until loaded, or those buttons should at least by invisible+disabled.
6. Regarding a previous bug I mentioned about clicking through UI, you said that you can't click through buttons, but I've verified that I can click through the build menu, both the category tab buttons and the build buttons for each development.
7. When a damaged tile is repaired by a repair hut, the full health bar does not disappear. (Since all other tiles with full health do not have health bars, I'd assume when healed it should disappear, if not immediately, at least after a couple seconds)