How to remove the default editor inserted in a custom module

Question

I have created a custom module in Joomla 3.5; I have a set of fields, but surprisingly, a default editor is inserted into the module basic tab, while I have not such fields in my fields XML:

<config>
        <fields name="params">
            <fieldset name="basic">

                <field name="title" label="Title" type="text" />
                <field name="subtitle" label="Subtitle" type="text" />
                <field name="title-class" label="Title CSS Class" type="text" />
                <field name="subtitle-class" label="Subtitle CSS Class" type="text" />
</fieldset>
        </fields>
    </config>

Does anyone know what's the issue and how can I remove this textarea?

Answer 1

Please check if your custom module XML file contains the following line:

<customContent />

This line is present in the default Joomla Custom HTML module, and inserts an editor field in the main tab of your module, even when it's not located inside the <config> tag.