Javascript translations (admin_html_tags) leave empty fields

[4000degrees]

When admin_html_tags is used the selected fields become empty.

This part of code doesn't work:
wp-multilang/assets/scripts/translator.js:52

    blocks.forEach(function(block, index) {
      if (index % 2 === 1) {
        lang = block;
      } else if (!!results[lang]) {
        results[lang] += block.trim();
      }
    });

The first problem is that language tags don't get stripped. In blocks array they look like "[:en]" not just "en". So in the else part if is never true because "[:en]" is compared to "en".

The second problem is !!results[lang] which is never true also. It should be "lang in results".

This is working:

    blocks.forEach(function(block, index) {
      if (index % 2 === 1) {
        lang = block.replace(/\[|\]|:/g,'');
      } else if (lang in results) {
        results[lang] += block.trim();
      }
    });