https://developer.mozilla.org/en-US/Add-ons/WebExtensions/API/tabs/update states that about:newtab is an unprivileged about: page. However, the following page makes no mention: https://developer.mozilla.org/en-US/Add-ons/WebExtensions/API/tabs/create I tested that about:blank, about:logo etc. are able to be opened, but not about:config, as intended. I was unable to open about:newtab, so it seems it is privileged. Bug 1346059 confirms that we are unable to open about:newtab. Should the documentation be updated? Tested on Fx 55.
On the page: https://developer.mozilla.org/en-US/Add-ons/WebExtensions/API/tabs/create It says: "url Optional string. The URL to navigate the tab to initially. Defaults to the New Tab Page." I've added a note about:newtab to make it more explicit. MDN is a Wiki, anyone can edit, so if you think it needs more please add it in.
Status: NEW → RESOLVED
Last Resolved: 9 months ago
Resolution: --- → FIXED
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