I noticed that in one of your games yesterday, and when you mentioned it, I thought perhaps it was because there were no adjustments for your boards in the image_dimensions.php script. But I just tested Shogi and Xiangqi, and I am seeing the same thing. As I've been editing code to not show warnings in the PHP error log, I have made lots of edits to draw_grid_png.php. I'll have to take a look at it and see what's causing this.
I noticed that in one of your games yesterday, and when you mentioned it, I thought perhaps it was because there were no adjustments for your boards in the image_dimensions.php script. But I just tested Shogi and Xiangqi, and I am seeing the same thing. As I've been editing code to not show warnings in the PHP error log, I have made lots of edits to draw_grid_png.php. I'll have to take a look at it and see what's causing this.