Chart interaction and brush selection interfering

I am trying to have a pannable and zoomable chart with a brush selection. If we just add interactive() to a chart, it will interfere with the brush selection and make things weird. So I thought I’d bind the scales separately with an “on” kwarg like in the user guide for multiple selections. Code below as a copy-pastable example.
However, this doesn’t behave well: even without holding the shift key, dragging will still move the chart around. Is this a vega-lite/vega issue, and is there a workaround?

from vega_datasets import data
df = data.disasters()
df.Year = pd.to_datetime(df.Year, format="%Y")

brush = alt.selection(
    type="interval",
    encodings=["x"],
    on="[mousedown[event.altKey], mouseup] > mousemove",
)

interaction = alt.selection(
    type="interval",
    bind="scales",
    on="[mousedown[event.shiftKey], mouseup] > mousemove",
)

alt.Chart(df).mark_bar().encode(
    x="Year",
    y="sum(Deaths)",
    color="Entity",
    opacity=alt.condition(brush, alt.OpacityValue(1), alt.OpacityValue(0.7)),
).add_selection(
    brush,
    interaction
)

[jakevdp]

You need to set additional properties if you want translate and zoom behavior to require a particular key to be held:

brush = alt.selection(
    type="interval",
    encodings=["x"],
    on="[mousedown[event.altKey], mouseup] > mousemove",
    translate="[mousedown[event.altKey], mouseup] > mousemove!",
    zoom="wheel![event.altKey]",
)

interaction = alt.selection(
    type="interval",
    bind="scales",
    on="[mousedown[event.shiftKey], mouseup] > mousemove",
    translate="[mousedown[event.shiftKey], mouseup] > mousemove!",
    zoom="wheel![event.shiftKey]",
)

[Luttik]

Wow if you don’t know it than who does 😆 . The link that you posted was the first link in my question too. I feel like I’ve fully explored the options presented there. The weird thing is that in the expression language there is so much stuff about calculating a value but no stuff about equality which seems like such an important element in calculation