On my browser (Chrome, Linux), the bottom rows of the map are cut off (and the rest of the rows don't line up correctly with the row numbers.)

https://imgur.com/a/fCoMfmK

I have the same issue. Level 8, I'm on desktop using the Firefox browser. I can't scroll down at all to see the lower rows.

Also the same issue, level 9, using Brave on desktop. The last row isn't numbered (it would be row 26 but the numbers stop at 25), and I had a leviathan extend off the bottom of the board. It definitely had a piece in row 26, but there appeared to be more beyond that I couldn't get to.

Level 9 on my iPad and Safari. When first starting the game, it looks normal, but as soon as I click a space the board expands and I can't see the bottom rows or the right side.

same issue, level 9, using Firefox

A quick fix that worked for me when I encountered this last week: zoom out to about 70%. I could operate on the whole field then!

And the next day the whole field appeared normal without any zooming. I don't know what that was all about though!

Same issue on Chrome for Chapter 9. I count only 23 visible rows, but the side indicates there are 25. The bottom rows are cut off. This is currently impossible to complete.

Edit: 's tip appears to have worked. I count 25 rows after zooming out and zooming back in. Hopefully that holds going forward. Thank you!