If you got something like this happened on Firefox Mac, you should disable some setting
![](https://user-media-prod-cdn.itsre-sumo.mozilla.net/uploads/images/2020-07-26-10-58-20-9523ef.png)
![](https://user-media-prod-cdn.itsre-sumo.mozilla.net/uploads/images/thumbnails/uploads/images/2020-07-26-11-00-31-aee8d0.png)
Go about:config
Search for privacy.resistFingerprinting
privacy.resistFingerprinting.randomDataOnCanvasExtract
tofalse
privacy.resistFingerprinting.autoDeclineNoUserInputCanvasPrompts
tofalse
References
- https://support.mozilla.org/en-US/questions/1296571
Photo by Keagan Henman on Unsplash