Legend not working when using custom colorrange

[howbgl]

• are you running newest version (version from docs) ? Makie v0.20.4 & CairoMakie v0.11.5
• can you reproduce the bug with a fresh environment ? (]activate --temp; add Makie)
• What platform + GPU are you on?

Julia Version 1.10.0
Commit 3120989f39b (2023-12-25 18:01 UTC)
Build Info:
  Official https://julialang.org/ release
Platform Info:
  OS: Linux (x86_64-linux-gnu)
  CPU: 12 × AMD Ryzen 5 5625U with Radeon Graphics
  WORD_SIZE: 64
  LIBM: libopenlibm
  LLVM: libLLVM-15.0.7 (ORCJIT, znver3)
  Threads: 1 on 12 virtual cores

MWE

using CairoMakie

f = Figure()
ax = Axis(f[1,1])
for i in 1:8
    lines!(ax,rand(16);colorrange=(1,8),color=i,label="$i")
end
axislegend(ax)

Similar results occur when using scatter! instead of lines! and f[1, 2] = Legend(f, ax, "Legend") instead of the call to axislegend.

The latest version where the MWE is not broken is Makie v0.19.5 and CairoMakie v0.10.6.

Stacktrace

ERROR: Cannot determine a colorrange automatically for single number color value. Pass an explicit colorrange.
Stacktrace:
  [1] error(s::String)
    @ Base ./error.jl:35
  [2] assemble_colors(::Int64, color::Observable{Any}, plot::Lines{Tuple{Vector{Point{2, Float32}}}})
    @ Makie ~/.julia/packages/Makie/fyNiH/src/colorsampler.jl:364
  [3] color_and_colormap!(plot::Lines{Tuple{Vector{Point{2, Float32}}}}, colors::Observable{Any})
    @ Makie ~/.julia/packages/Makie/fyNiH/src/interfaces.jl:14
  [4] color_and_colormap!(plot::Lines{Tuple{Vector{Point{2, Float32}}}})
    @ Makie ~/.julia/packages/Makie/fyNiH/src/interfaces.jl:10
  [5] calculated_attributes!
    @ Makie ~/.julia/packages/Makie/fyNiH/src/interfaces.jl:98 [inlined]
  [6] connect_plot!(parent::Scene, plot::Lines{Tuple{Vector{Point{2, Float32}}}})
    @ Makie ~/.julia/packages/Makie/fyNiH/src/interfaces.jl:253
  [7] plot!(scene::Scene, plot::Lines{Tuple{Vector{Point{2, Float32}}}})
    @ Makie ~/.julia/packages/Makie/fyNiH/src/interfaces.jl:260
  [8] _create_plot!(F::Function, attributes::Dict{Symbol, Any}, scene::Scene, args::Observable{Vector{Point{2, Float32}}})
    @ Makie ~/.julia/packages/Makie/fyNiH/src/figureplotting.jl:265
  [9] lines!(::Scene, ::Vararg{…}; kw::@Kwargs{…})
    @ MakieCore ~/.julia/packages/MakieCore/5nuEY/src/recipes.jl:176
 [10] legendelement_plots!(scene::Scene, element::LineElement, bbox::Observable{…}, defaultattrs::Attributes)
    @ Makie ~/.julia/packages/Makie/fyNiH/src/makielayout/blocks/legend.jl:286
 [11] (::Makie.var"#2010#2024"{…})(entry_groups::Vector{…})
    @ Makie ~/.julia/packages/Makie/fyNiH/src/makielayout/blocks/legend.jl:229
 [12] #invokelatest#2
    @ ./essentials.jl:887 [inlined]
 [13] invokelatest
    @ ./essentials.jl:884 [inlined]
 [14] notify
    @ ~/.julia/packages/Observables/YdEbO/src/Observables.jl:206 [inlined]
 [15] initialize_block!(leg::Legend; entrygroups::Observable{Vector{Tuple{Nothing, Vector{LegendEntry}}}})
    @ Makie ~/.julia/packages/Makie/fyNiH/src/makielayout/blocks/legend.jl:247
 [16] _block(T::Type{…}, fig_or_scene::Figure, args::Tuple{}, kwdict::Dict{…}, bbox::Observable{…}; kwdict_complete::Bool)
    @ Makie ~/.julia/packages/Makie/fyNiH/src/makielayout/blocks.jl:388
 [17] Legend(fig_or_scene::Figure, contents::Vector{…}, labels::Vector{…}, title::Nothing; bbox::Observable{…}, kwargs::@Kwargs{…})
    @ Makie ~/.julia/packages/Makie/fyNiH/src/makielayout/blocks/legend.jl:514
 [18] Legend(fig_or_scene::Figure, axis::Axis, title::Nothing; merge::Bool, unique::Bool, kwargs::@Kwargs{…})
    @ Makie ~/.julia/packages/Makie/fyNiH/src/makielayout/blocks/legend.jl:562
 [19] Legend
    @ Makie ~/.julia/packages/Makie/fyNiH/src/makielayout/blocks/legend.jl:559 [inlined]
 [20] #axislegend#2069
    @ Makie ~/.julia/packages/Makie/fyNiH/src/makielayout/blocks/legend.jl:627 [inlined]
 [21] axislegend
    @ Makie ~/.julia/packages/Makie/fyNiH/src/makielayout/blocks/legend.jl:626 [inlined]
 [22] axislegend(ax::Axis)
    @ Makie ~/.julia/packages/Makie/fyNiH/src/makielayout/blocks/legend.jl:603
 [23] top-level scope
    @ REPL[47]:1