includesubpages filter gets applied AFTER fetching pages

[soukupmi]

DynamicPageList3 version: 3.4.6 (8e5ae9c)
MediaWiki version: 1.38.1 (d34e8c5)
PHP version: 7.4.28 (fpm-fcgi)

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

• Tested for translated pages of the dragons on the Dragontamer wiki
• gives back the 3 pages preceding the current (including sub-pages)

{{#dpl:
|category=Dragons
|namespace=Dragon
|titlelt=Raging Fire
|ordermethod=sortkey
|order=descending
|count=3
}}

• Now with the subpages excluded one would expect to still get 3 results

{{#dpl:
|includesubpages=false
|category=Dragons
|namespace=Dragon
|titlelt=Raging Fire
|ordermethod=sortkey
|order=descending
|count=3
}}

What happens?:
The filter is applied after fetching the pages, so only 1 of the 3 pages gets displayed. Unlike every other filter, which is applied while fetching the pages.

What should have happened instead?:
Apply the filter while fetching the pages, like nottitleregexp e.g. and others.

Browser information, screenshots and other applicable information: