Better handling of switching images

[Zaczero]

kiedy klikam node1 ktory ma image i sie zaladuje,
potem kilkam na node2 (ktory tez ma image), to przez chwile widac stare zdjecie,
jak ladowanie potrwa dlugo to moze byc confusing ze wyswietla sie to samo, powinno odrazu schowac stare zdjecie do czasu zaladowania nowego

[danieldegroot2]

when I click on node1 which has an image and it loads,
then I click on node2 (which also has an image), then for a while the old photo is displayed,
if it takes a long time to load, it can be confusing that the same image is displayed, it should immediately hide the old image until the new one is loaded

Also, would add an indication an image is loading,