Overview of the Issue
You may notice inconsistencies in the word count feature when working with the GoodLayers core plugin. The reported problem is that WPML’s translation management system is not accurately counting the words in pages or posts created using GoodLayers.
Workaround
This issue is fixed in WPML Multilingual CMS 5.1.0. Updating solves it on your site, so you only need this workaround if you can’t update yet.
Update to WPML 5.1 or later. WPML 5.1 counts the words of GoodLayers pages correctly, including the text GoodLayers stores in custom fields.