Steps to reproduce the issue

Any selector that uses 'Joomla.form.field.list-fan-select' or 'Joomla.form.field.groupedlist-Fancy-select' does not find chains in a text from approximately more than 30 characters.

For example, create a category with a long text and in listing articles performs a search for the end of the phrase.

Expected result

I should find any word throughout the sentence.

Actual result

In the image if I begin to perform the search from the word 'activitats', it does not find the category.

With word 'activitats' or 'consell' or 'esportiu' ...

System information (as much as possible)

Joomla 5.1.4

Additional comments

I would also like to try, is there any example of using AJAX searches?

Well, I found an example in 'C:\xampp\htdocs\joomla\layouts\joomla\form\field\tag.php' but the same thing happens when creating a label with long text. It turns out that Ajax returns correct answers but Choices do not visualize them.

As I say, it seems that there is a limit of the first 30 characters in the chain.

Same problem in Menus elements selector and with any selector that uses choices.

Thank you so much