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[BUG]: `layout.uirevision` doesn't play well with map subplot auto-fit

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Assessment

Difficulty
3/5
Estimated time
1-2 days
Newbie friendliness
68/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Active
Tech stack
javascript
Domain
data-visualization

Research direction

Start by reproducing the scattermap case with unchanged layout.uirevision, then trace the map subplot auto-fit path during Plotly.react. Compare it with the existing explicit center/zoom behavior and the cartesian autorange behavior. Done means a user's pan or zoom is preserved across Plotly.react calls when uirevision is unchanged.

Written by the indexing model from the issue text.

Description

bug good for agent P2 plotly-internal size: 3
Description

When a map subplot uses fitbounds, layout.uirevision fails to preserve the user's subsequent pan/zoom across Plotly.react calls. The map snaps back to the auto-fit view even when the uirevision value is unchanged.

Screenshots/Video

https://github.com/user-attachments/assets/48f4da34-d74f-4958-a874-2bd9a3844181

Steps to reproduce
  • Be on v4.0 (or the default branch after it gets released)
  • Plot a scattermap with uirevision set and no explicit center/zoom: 
    Plotly.newPlot(gd, [{
  type: 'scattermap',
  lon: [-75, -74, -73],
  lat: [40, 41, 42],
  mode: 'markers'
}], {
  uirevision: 'v1',
  width: 400,
  height: 400
});
  • Pan the map with the mouse
  • Call Plotly.react with the same uirevision: 
    Plotly.react(gd, gd.data, { uirevision: 'v1', width: 400, height: 400 });
  • Note that the map snaps back to the auto-fit view instead of keeping the panned view
Notes
  • Discovered while working on #7884. The auto-fit and zoom-button behaviors landed there; this uirevision integration was deferred as out-of-scope.
  • This works correctly for cartesian axes (via autorange) and for map subplots when the user has supplied an explicit center/zoom from the start. It only fails on the auto-fit path.
Dominant language
JavaScript
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Merged PRs (30d)
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