Fix unexpected shrinking of logo with top nav #13226
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Pull request overview
This PR fixes an issue where st.logo would unexpectedly shrink when used with top navigation in Streamlit apps.
- Adds
flexShrink: 0CSS property to prevent the logo container from shrinking when the top navigation overflow container expands - Adds comprehensive e2e visual regression test to validate the fix across different viewport sizes
Reviewed changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.
| File | Description |
|---|---|
frontend/app/src/components/Header/styled-components.ts |
Added flexShrink: 0 to StyledHeaderLeftSection to prevent logo from shrinking when used with top navigation |
e2e_playwright/multipage_apps_v2/mpa_v2_top_nav_test.py |
Added test_top_nav_with_logo_visual_regression test to verify logo maintains correct size with top navigation across viewport changes |
sfc-gh-bnisco
approved these changes
Dec 4, 2025
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Dec 5, 2025
## Describe your changes Fixes an issue with `st.logo` resizing/shrinking to unexpected sizes if top navigation is used. ## GitHub Issue Link (if applicable) - Closes #13225 ## Testing Plan - Added e2e test. --- **Contribution License Agreement** By submitting this pull request you agree that all contributions to this project are made under the Apache 2.0 license.
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Describe your changes
Fixes an issue with
st.logoresizing/shrinking to unexpected sizes if top navigation is used.GitHub Issue Link (if applicable)
Testing Plan
Contribution License Agreement
By submitting this pull request you agree that all contributions to this project are made under the Apache 2.0 license.