Thanks for all the hard work on the HTML versions. There’s a minor bug on the cross-a-pix puzzles with "autocheck completed lines" option active.
If you fill in a line by clicking on a square, but cycle through to empty without moving the mouse, it unchecks all the finished lines. For example, I click to fill in a box, but immediately realize I clicked on the wrong one, and set it back to blank. However that temporarily filled in a line which then goes back to unfinished. That’s when all the finished lines are no longer checked.
All I have to do is finish another line and it rechecks all the others. I can just empty a box from a finished line, move the mouse so the puzzle updates, then fill it back in.