I just downloaded the latest version of wpml-string-translation (v3.2.0)
I noticed the filesizes for the admin JS files were significantly larger, which concerned me.
Upon further inspection, it seems that your developers have baked the JS sourcemaps directly into the dist files. There are now four app.js files totalling 31.7MB... this clearly isn't right.
For comparison, the previous version I was using had three app.js files which added up to 3.31MB in total. This size makes a lot more sense, and they do not contain sourcemaps.