: Since the pixels were the same, seems like p5 has some difference in setting that shows the first underneath layer which is the background pixels in case of transparency of image. But browsers react differently. They display the pixels of window.

: The other strange issue was that chrome displays actually the color of the window as is defined in ''bgcolor'' whereas firefox just fills the transparent pixels with black color.

*''' Final Solution'''

: So, we got nowhere in comparing these 2 together, so we decided to go around it and solve it with modifying REPLACE mode in blit_resize():