Use of drawWindow method from CanvasRenderingContext2D is deprecated. Use tabs.captureTab extensions API instead https://developer.mozilla.org/docs/Mozilla/Add-ons/WebExtensions/API/tabs/captureTab
Ri rokisaxik rub'anikil drawWindow pa ojer CanvasRenderingContext2D. Ke'okisäx ri taq ruwi'.captureTab taq k'amal API pa ruk'exel https://developer.mozilla.org/docs/Mozilla/Add-ons/WebExtensions/API/tabs/captureTab