Bug
The custom header HTML can no longer be overridden by custom CSS after the ArcGIS Online February update in ArcGIS Instant Apps.
| Bug ID Number | BUG-000166653 |
|---|---|
| Submitted | April 11, 2024 |
| Last Modified | August 6, 2025 |
| Applies to | ArcGIS Online |
| Version found | Feb 2024 |
| Operating System | Windows OS |
| Operating System Version | 10.0 64 Bit |
| Status | Duplicate |
Additional Information
Duplicate of BUG-000166176.Workaround
Use HTML source to edit the custom HTML instead of using custom CSS.
- Custom CSS is intended to change the theme of ArcGIS Instant Apps, whereas custom HTML source can be used to change custom HTML headers.
Steps to Reproduce
Bug ID: BUG-000166653
Software:
- ArcGIS Online
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