Zooming broken on faceted plots

[Robert]

Issue: when using a faceted plot via Geom.subplot_grid, zooming does not work correctly. Pressing I and O to zoom in and out does not zoom all subplots the same way, and using shift+drag to zoom in on a selected portion of a graph hides most parts of other graphs.

To reproduce:

julia> using Pkg, DataFrames, Random, Gadfly

julia> VERSION
v"1.9.2"

julia> Pkg.status("Gadfly")
Status `~/.julia/environments/v1.9/Project.toml`
  [c91e804a] Gadfly v1.4.0

julia> nrows = 2000
2000

julia> df = DataFrame(:a => randn(nrows), :b => randn(nrows), :c => rand('a':'d', nrows))
2000×3 DataFrame
  Row │ a            b           c    
      │ Float64      Float64     Char 
──────┼───────────────────────────────
    1 │ -0.514853    -0.37189    b
    2 │  0.22696     -0.905798   b
    3 │ -0.152049    -0.35202    a
    4 │  0.317134     1.59357    c
    5 │ -0.37718      0.0605893  d
    6 │ -1.00071      2.02576    a
    7 │  0.363566    -0.514146   d
    8 │  0.857302    -0.137145   b
  ⋮   │      ⋮           ⋮        ⋮
 1994 │ -0.114597     0.329542   a
 1995 │ -0.114567     0.492426   d
 1996 │  0.510985     1.47101    b
 1997 │ -0.957645    -1.10034    a
 1998 │ -0.267756    -1.80968    a
 1999 │  0.803785    -1.59344    b
 2000 │  1.21938      2.3976     b
                     1985 rows omitted

julia> plot(df, x=:a, y=:b,xgroup=:c, Scale.xgroup(levels='a':'d'), Geom.subplot_grid(Geom.point))

Here is the html produced:

Gadfly Plot.html.zip