Oh man… I do see my console.log lines when I open the Dev Tools console.
It seems that the Developer Console that Wix provides (the console that Wix Web IDE shows when I run the code) does not show the log for custom element. I’ve been using this console as it shows both frontend and backend code logs, but I guess it doesn’t support the logs from custom elements… It’s weird, but that’s what I see…
Thanks for mentioning about the browser’s dev tool console!