HTML content in Multi-Line Text Field misbehaving in Experience Editor

Question

We have a requirement to add HTML in multi-line text field. For example, content author can add a Bold text in the field-

"test <b>sample text<b>"

now we are having an issue in experience editor and it is behaving strange on the different hosting environment. On Local environment it stripping the HTML Tags and on PROD it encoding the HTML tags when editing from Experience Editor.

I did try following setting -

<setting name="Rendering.HtmlEncodedFieldTypes" value="text|single-line text|multi-line text" />

but no luck, FYI it is working fine for single-line text control and I am not using any ORM.

 @if (isExperienceEditor)
 {
      @Html.Sitecore().Field(_HoverImageCallout.Fields.HoverText)
 }
 else
 {
      @Html.Raw(Model.Item[_HoverImageCallout.Fields.HoverText])
 }

Image after saving item in experience editor -

Sitecore version 9.1.1

Answer 1

There was a defect in prior version of sitecore where multiline text could get modified if html tags are given in it.

In order to fix it sitecore used to provide a patch for it.

https://kb.sitecore.net/articles/148401

https://sitecore.app.box.com/s/m0q3uyjku4emm6y07g6zffc63pby6m6o

However it was recommended to convert multiline text either by single line text or rich text.

In my suggestion it would be better if you can make it Rich text. It will save you to write additional checks as well like "isExperienceEditor" and single line of code can work for both content and experience editor

@Html.Sitecore().Field(_HoverImageCallout.Fields.HoverText)