plotly / plotly/plotly.py

Bug Report: strange behavior with `Scattergl` and slider

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bug cs P2
Dominant language
Python
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Description

Dash Enterprise client is trying to create a scatter plot with px.Scattergl with a slider and is experiencing a strange behavior where the box select in conjunction with the slider renders lines across the cell for the visualization. This behavior does not take place when using px.Scatter. The preference is to use Scattergl because of the amount of data with which they will be working.

https://github.com/user-attachments/assets/a057aaab-d552-4ee2-bb4b-6789f2872dce

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the reported behavior with px.Scattergl, a slider, and box select, then compare it with px.Scatter using the attached recording as the reference. Investigate the lines rendered across the visualization cell and consider the issue complete when Scattergl no longer shows them during slider interaction.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
data-visualization
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
35/100

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