Try

<div t-if="doc.note != '<p><br/></p>'">

    <strong>Note: </strong>

    <span t-raw="doc.note"/>

</div>

Hi,

Since Odoo V14 there is a new helper called "is_html_empty". This built-in helper in the Odoo core now allows you to check if a field is empty or not. You can use this "is_html_empty" function in QWeb statements. You can then simply wrap this in a t-if statement as such: "t-if="is_html_empty(doc.note)" and do a t-else statement for example.

P.S: Sorry I wanted to paste a whole code block sample but sadly the official forum editor is completely broken again. You can see a sample in the core from Odoo here

salam jean44;

in order to check if the html.field is empty you need to add this code:

<t t-foreach="docs" t-as="doc">
                <t t-if="doc.html.field == '&lt;br&gt;'">
                    <t t-set="style" t-value=" 'display: none;' "/>
                </t>

<span  t-att-style="style" t-raw="html.field"/> 

</t>

where &lt;br&gt; is <br> decoded

HI Jean

You just try <span> or <div> tag instead of <p> tag

I mean,

             <span t-if="doc.note">

                <strong>Note: </strong>

                <span t-raw="doc.note"/>

            </span>

or

            <div t-if="doc.note">

                <strong>Note: </strong>

                <span t-raw="doc.note"/>

            </div>

This how Odoo does it, did you try their method?

https://github.com/odoo/odoo/blob/11.0/addons/website_quote/views/website_quote_templates.xml#L649

<div t-field="option_line.website_description" class="oe_no_empty"/>

Hello,

I still have this problem, Any help please !

BR