Error when dealing with DOMParser.parseFromString()

[laniakea64]

Environment:
SeaMonkey 2.46
uMatrix 0.9.9b2
new profile

Steps-to-reproduce:

1. install uMatrix, restart browser
2. open Web Console and run this code

var x = new DOMParser();
x.parseFromString('<img src="http://example.com/" />', 'text/html');

Actual results:
This error appears in the Browser Console -

TypeError: contextWindow is null [Learn More]  frameModule.js:161:14

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(Might as well respond to the inevitable reply now, to save some time - yes, I do have a real-world example of this which doesn't involve the Web Console, but it requires a login. :) )

[gorhill]

SeaMonkey 2.46 is based on which version of Firefox?

[byte-jra]

49

[gorhill]

Related: gorhill/uBlock#1893

[laniakea64]

Fixed, thanks! 😃