KIP screen brightness and contrast

[gipizeta]

On a raspberry rpi4 I have just updated Signalk server version and KIP webapp version to the latest one
I use chromium browser connected the rpi itself (127.0.0.1)
when I call the page with the browser (http://127.0.0.1:3000/@mxtommy/kip/#/1) the image appears very dark with low contrast between the back field and number and characters: the numbers are black. As soon as I change page or simply switch on night mode vision and then on day vision again and the numbers became white and everything has the correct color.
It happens at every startup of the page and doesn't happens anymore
with the old versions of signalk and kip there wasn't this behavior
I have deleted the pages and make them again new but it doesn't help
any idea ?