No results when using ignorecase

[Flachdachs]

DynamicPageList3 version: 3.5.3
MediaWiki version: 1.41.1
PHP version: 8.1.28

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

• Have some pages with titles starting with A (any other non-diacritical letter will do).
• Create a DPL query with titlematch=A% and see some results.
• Add ignorecase=true

What happens?:

With ignorecase=true there are no results.

But if you have pages with diacritical letters they are listed, if you include them like titlematch=A%|Ä%.

What should have happened instead?:

Results should be listed.

Additionally I'd like that titlematch also matches characters with diacritics without appending a pattern for every possible character individually.