Two images same size – different lightbox size!

Dear customer support,

i’m providing a page where there is a list of text for a menu restaurant like:

aperitivo
full menu
wine list
etc

every string should be open a lightbox with an image uploaded in the gallery.

Every image has 2000×2000 px size, and i set the size panel to this option

Width: false
Height: false
Inner Width: false
Inner Height: false
Initial Width: 100%
Initial Height: 100%
Maximum Width: 150%
Maximum Height: 150%
Resize: Checked

Don’t know why, for the first image is working the resize, for the others not. but they are all the same size 2000x2000px.
The second image lightbox popup full screen, the first one instead (the one that i want) popup smaller. where I did wrong?

https://wordpress.org/plugins/wp-colorbox/