WebRTC detection : No leak with Dragon as Chromodo fails.

i tested the extension WebRTC Block 2.0 to block the possibility to find my private ips network over the internet.
I used this website : https://ipleak.net
and Dragon with the WebRTC block 2.0 extension activated doesn’t leak my private network ips, if i disable the extension, Dragon shows my private network ips.
For Chromodo, there’s an error telling : Uncaught TypeError: Cannot read property ‘set’ of undefined (I enabled collect errors in the extensions tab). and my private network ips are leaked.
I post a screenshot of View details link next to the extension

Greetings, ailef.

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