Image contrast changed in v0.16.4

[Octogonapus]

The contrast of an image! plot changed in Makie v0.16.4. This also happens in v0.17. Using Julia v1.7.

MWE

import Pkg
Pkg.activate(;temp=true)
Pkg.add(name="Makie",version=ENV["MAKIE_VERSION"])
Pkg.pin(name="Makie",version=ENV["MAKIE_VERSION"])
Pkg.add(name="GLMakie")
Pkg.add(name="FileIO")

using GLMakie, FileIO

f = Figure(resolution=(100,100))
ax = Axis(f)
img = reshape([UInt8(i+j) for j in 1:10 for i in 1:40], (40,10))
image!(ax, img, interpolate = false, colorrange = (0, 255))
FileIO.save(joinpath(@__DIR__, "$(ENV["MAKIE_VERSION"])_img.png"), f)

Makie v0.16.3 (correct):

Makie v0.16.4 (incorrect; image is different):

Makie v0.17.3 (also incorrect):

[IanButterworth]

Seems likely that the regression was in #1654

Any idea @SimonDanisch? This is pinning us to v0.16.3

[SimonDanisch]

I can take a look tomorrow!