# Twistie icons not showing in Firefox 68

When a locally hosted Seascape archive is opened in Firefox 68 or higher, the twistie icons are replaced with a different icon as shown in this screenshot:

![](https://1039028294-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MkmLDl5OXrWVfn2nv57%2F-MlPvDFcMA1MolEkLrfZ%2F-MlPvRR7kphKlsKQcuLq%2Fimage.png?alt=media\&token=7192fc3d-12a6-468e-8c82-1d0730fb2faa)

The issue is caused due to a change in the way that the origin of the page is defined in Firefox starting with version 68.

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More info: <https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS/Errors/CORSRequestNotHttp>\
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To resolve the issue, you'll need to set the **privacy.file\_unique\_origin** setting in your Firefox settings to **false**.

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Type **about:config** in your address bar, look for the **privacy.file\_unique\_origin** setting, and double click the **Value** entry so it changes to **false**:

![](https://1039028294-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MkmLDl5OXrWVfn2nv57%2F-MlPvDFcMA1MolEkLrfZ%2F-MlPvYW-UAE8BIkBt1KF%2Fimage.png?alt=media\&token=141690a4-b6c3-4a85-aca7-7f64f352fbad)

After restarting Firefox, the twistie icons will be displayed normally:

![](https://1039028294-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MkmLDl5OXrWVfn2nv57%2F-MlPvDFcMA1MolEkLrfZ%2F-MlPve20ia0LCwO_nDI5%2Fimage.png?alt=media\&token=bde889cf-608f-4ebe-aff6-45ff2c8e6d95)