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darktrojan / newtabtools

New Tab Tools add-on for Firefox and Chrome
https://addons.mozilla.org/firefox/addon/new-tab-tools/
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html5 canvas graphics access warning in Firefox >=58 #380

Open jmozmoz opened 6 years ago

jmozmoz commented 6 years ago

It looks like that whenever this addon tries to generate a thumbnail of a page, a htm5 canvas graphics access warning is shown by Firefox (58.0 or newer).

If access is denied, no thumbnails can be added. Old thumbnails seem to disappear.

Is there any chance to indicate, if this warning is caused by newtabtools?

Unfortunately, at the moment there is no way (besides modifying the permissions.sql directly) to reset this permission.

jmozmoz commented 6 years ago

(to see the warning, the preference privacy.resistFingerprinting has to be set to true)