[Bug][Firefox] Additive layer blending results in wrong colour in image export
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- TypeScript
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Description
**Describe the bug**
When using the layer blending mode as "additive", going on "Share > Export Image" will sometimes result in the wrong colours in Firefox. Tried with Chrome and I was able to get a successful export each time.
For example, pink becomes purple and blue becomes green.
**To Reproduce**
Steps to reproduce the behaviour:
1. Upload a CSV file with point data in Firefox
2. Set blending mode to additive
3. Export the image
**Expected behaviour**
Exports with the correct colours.
**Screenshots**
**Desktop (please complete the following information):**
- OS: Windows
- Browser: Firefox
- Version: 128
Contributor guide
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Research direction
Start by reproducing the issue in Firefox 128 on Windows: upload CSV point data, set the blending mode to additive, and use Share > Export Image. Compare the exported colours with Chrome and the screenshots in the issue. Done means additive exports preserve the expected colours in Firefox, including pink and blue.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- typescript
- Domain
- data-visualization, frontend
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100