%TITLE% in output format does not honour DISPLAYTITLE

[jrbray1]

DynamicPageList3 version: 3.5.1
MediaWiki version: 1.39.5
PHP version: 7.4.3-4ubuntu2.23

List of steps to reproduce (step by step, including full links if applicable):

for page X with {{DISPLAYTITLE:Y}}

format=,%TITLE%,,

What happens?:

X is displayed

What should have happened instead?:

Y should be displayed

Browser information, screenshots and other applicable information: