if the window is forcibly resized to a size that isn't a multiple of the cell size (i.e. when maximizing the window), the background color isn't drawn correctly and/or the window width isn't handled correctly, so the background color of the final cell extends too far and the border isn't drawn correctly.
(pictured: bottom right corner of the screen)
if the window is forcibly resized to a size that isn't a multiple of the cell size (i.e. when maximizing the window), the background color isn't drawn correctly and/or the window width isn't handled correctly, so the background color of the final cell extends too far and the border isn't drawn correctly.
(pictured: bottom right corner of the screen)