On the simple text field :

• Insert a simple text field in a form and fill in the value field with the "&" character
• Insert another simple text by reseing the Placeholder field with the character "&"
  Save the form, on display the "&" is written "& amp;"

In the text box field :

• Insert a text box field and enter the placeholder with the character "&"
  Save the form, on display the "&" is written "& amp;"

*On the drop-down list field: *

• Insert a drop-down list and enter the placeholder with the character "&"
  Save the form, on display the "&" is written "& amp;"

In the password field:

• Insert the password field and enter the placeholder with the character "&"
  Save the form, on display the "&" is written "& amp;"

On the hidden field:

• Insert a hidden field and fill in the placeholder with the character "&"
  Save the form, on display the "&" is written "& amp;"