1609519 - Several errors triggered while navigating websites with canvas demos.

Status: RESOLVED INVALID

(Core :: Graphics: CanvasWebGL, defect)

Description

[Jeronimo Torti (Please send NI request to Brindusa Tot)]

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:74.0) Gecko/20100101 Firefox/74.0
Build ID: 20200115093807

The following websites are throwing several errors during navigation:

• Open web console
• Go to http://html5doctor.com/demos/video-canvas-magic/demo0.html
• Wait for loading the page, and observe that several errors are triggering in web console.

Errors such as:

The character encoding of the HTML document was not declared. The document will render with garbled text in some browser configurations if the document contains characters from outside the US-ASCII range. The character encoding of the page must be declared in the document or in the transfer protocol.

-Another page: https://codepen.io/eltonkamami/pen/ECrKd
Errors:

Feature Policy: Skipping unsupported feature name “gyroscope”.
SyntaxError: expected expression, got ','

Expected: Websites do not throw errors during navigation.

Comment 1

[Bert Peers [:bpeers]]

I've confirmed that the character encoding is in fact missing on the HTML page so the error reporting seems correct. Thanks.