When the serialization.semantic is set to false and the user uses the viewHtml tool and press 'Update' then after chaning the font-size, the style attribute is added to the element instead of the font attribute.
<font size="4">хххх</font>
The font-size after pressing the 'Update' button is applied using the style attribute
<p>aaaaaa</p>
<p><font size="1">bbbbbbb</font></p>
<p><font style="font-size: small;">ccccccc</font></p>
screencast - https://screenpal.com/watch/cZVvQtVJ8oz
When the semantic mode is set to false and the 'Update' button in the viewHtml tool is clicked the font size should be applied as initially - using the font attribute.