[BUG] plotly: subplots replaced by single polar plot

[joshday]

Details

If a polar projection is used for any subplot, only the polar plot appears.

Ex: plot(plot(), plot(1:5, proj=:polar))

gr():

plotly():

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: v1.6.3
Backend version (]st -m): NA
Output of versioninfo():

Julia Version 1.5.0
Commit 96786e22cc (2020-08-01 23:44 UTC)
Platform Info:
  OS: macOS (x86_64-apple-darwin18.7.0)
  CPU: Intel(R) Core(TM) i5-8210Y CPU @ 1.60GHz
  WORD_SIZE: 64
  LIBM: libopenlibm
  LLVM: libLLVM-9.0.1 (ORCJIT, skylake)

[Diaga]

From my research, plotly cannot display different chart types in the same figure.

[joshday]

I did find this: https://plotly.com/javascript/mixed-subplots/