I am pretty sure that the following was working not so long ago with ImageView.
ImageView.imshow(RGB[RGB(0.98,0.98,0.98) RGB(0.98,0.98,0.98); RGB(0.98,0.98,0.98) RGB(0.98,0.98,0.98)])
Now with julia 1.6.2 and ImageView 0.15.10, this gives an error.
I can fix it by replacing RGB[...
with RGB{N0f8}[...
but I am wondering if this is a bug or a recent change I have missed.