Fuel gauge

Just wondering if it’s like this on everyone else’s 2.5L. On every other bike I have owned, i fuel standing over the bike, with it vertical. With the filler port on the right side, I figure you’re supposed to use the side stand. But, on my ’21 GT, the fuel gauge after filling, never shows completely full, it’s always one bar less than full. It really makes no difference I guess, but it seems weird that this happens.

Mime shows all bars when full