Plots v1.11.0 breaks multi-coloured bar plots [BUG]

[sd109]

Details

Creating a bar plot with different colours for each bar no longer works after v1.11.0 (but works correctly on v1.10.6). It just gives all bars the colour which is first in the colour list (i.e. blue in MWE below).

MWE:

]add Plots@1.11.0
using Plots
bar(ones(3), c=[:blue; :red; :green])

which outputs:

julia> Plots.bar(ones(3), c=[:blue; :red; :green])
┌ Warning: Indices Base.OneTo(3) of attribute `seriescolor` does not match data indices 1:17.
└ @ Plots ~/.julia/packages/Plots/isZEW/src/utils.jl:123
┌ Info: Data contains NaNs or missing values, and indices of `seriescolor` vector do not match data indices.
│ If you intend elements of `seriescolor` to apply to individual NaN-separated segements in the data,
│ pass each segment in a separate vector instead, and use a row vector for `seriescolor`. Legend entries
│ may be suppressed by passing an empty label.
│ For example,
└     plot([1:2,1:3], [[4,5],[3,4,5]], label=["y" ""], seriescolor=[1 2])
┌ Warning: Indices Base.OneTo(3) of attribute `fillcolor` does not match data indices 1:17.
└ @ Plots ~/.julia/packages/Plots/isZEW/src/utils.jl:123
┌ Info: Data contains NaNs or missing values, and indices of `fillcolor` vector do not match data indices.
│ If you intend elements of `fillcolor` to apply to individual NaN-separated segements in the data,
│ pass each segment in a separate vector instead, and use a row vector for `fillcolor`. Legend entries
│ may be suppressed by passing an empty label.
│ For example,
└     plot([1:2,1:3], [[4,5],[3,4,5]], label=["y" ""], fillcolor=[1 2])
┌ Warning: Indices Base.OneTo(3) of attribute `markercolor` does not match data indices 1:17.
└ @ Plots ~/.julia/packages/Plots/isZEW/src/utils.jl:123
┌ Info: Data contains NaNs or missing values, and indices of `markercolor` vector do not match data indices.
│ If you intend elements of `markercolor` to apply to individual NaN-separated segements in the data,
│ pass each segment in a separate vector instead, and use a row vector for `markercolor`. Legend entries
│ may be suppressed by passing an empty label.
│ For example,
└     plot([1:2,1:3], [[4,5],[3,4,5]], label=["y" ""], markercolor=[1 2])

The warnings disappear if we reshape the colour vector:

bar(ones(3), c=reshape([:blue, :red,  :green], 1, :))

but we still don't get the correct behaviour.

Backends

This bug occurs on ( insert x below )

Backend	yes	no	untested
gr (default)	x
pyplot	x
plotly			x
plotlyjs			x
pgfplotsx			x
inspectdr			x

Versions

Plots.jl version: 1.11.0 onwards
Backend version (]st -m <backend(s)>): GR v0.55.0 & PyPlot v2.9.0
Output of versioninfo():
Julia Version 1.6.0
Commit f9720dc2eb (2021-03-24 12:55 UTC)
Platform Info:
OS: Linux (x86_64-pc-linux-gnu)
CPU: Intel(R) Core(TM) i7-8700T CPU @ 2.40GHz
WORD_SIZE: 64
LIBM: libopenlibm
LLVM: libLLVM-11.0.1 (ORCJIT, skylake)

[BeastyBlacksmith]

probably caused by #3320

[BeastyBlacksmith]

fixed in #3751