macOS has issues rendering when Dark mode is enabled
We are running PSU version 2026.1.1
Ran into an issue where on macOS, enabling Dark Mode in any browser caused it to not finish rendering the page? Has anyone else experienced this?
Recommended Answer
Hi Pss127,
We completed the laboratory review of your sanitized App using PowerShell Universal 2026.1.1 on Apple Silicon.
With your App, we reproduced the appearance of missing content when the PSU Dark theme was active. The controls were present, completed their dynamic loading, retained valid dimensions, and remained functional. We did not identify failed CSS or JavaScript resources or a related PSU server error.
The primary visual conflict identified was:
* `New-UDPaper` forces `backgroundColor = '#ffffff'`.
* Under the PSU Dark theme, some foreground text becomes white.
* This produces white content on a white background, making the controls appear not to have rendered.
We also identified two separate code issues:
* The `/Laps_Lookup` navigation target does not appear to align with the page containing the controls in the submitted structure.
* One loading component provides `-Style` as a CSS string instead of a property map, resulting in React error 62.
For a non-production copy of the App, we recommend:
1. Remove `backgroundColor = '#ffffff'` from `New-UDPaper` so the background can inherit the active theme.
2. Review the remaining hard-coded colors and replace them with theme-compatible values where necessary.
3. Ensure `/Laps_Lookup` opens the page containing the controls.
4. Correct the affected `-Style` value so it uses a PowerShell hashtable instead of a CSS string.
5. Test macOS Light and Dark Mode separately from the PSU Light and Dark themes.
We did not reproduce the exact macOS-only trigger, so we cannot classify this as a confirmed PSU defect. The current evidence supports a contrast conflict caused by the App’s fixed styling.
Please apply these changes only to a test copy and let us know whether the content remains visible in both Light and Dark modes.
Best regards,
Ruben Tapia
All Comments (11)
Hello Pss127,
Thank you for reporting this behavior.
To align the lab as closely as possible with your environment, could you please confirm:
* The exact macOS version and build.
* Whether the Mac uses Intel or Apple silicon.
* The browser names and exact versions tested.
* Whether the same App renders correctly after changing only macOS from Dark Mode to Light Mode.
* Whether the issue also occurs in a private browsing window with extensions disabled.
Once we have these details, we can reproduce the test using a comparable macOS and browser configuration.
Best regards,
Ruben Tapia