[Bug] Filter problem for Campaign Report

[Dret42]

What happened?

When I'm using a "filter" inside the table report "Campaign", the results are often wrong, here my example:

In my table report I have this list of values for "Campaign - Keyword" column:

• romatoday-escursione-monterano-23-11-2025 - escursione-monterano-link-sito-23-11-2025
• newsletter-escursione-monterano-23-11-2025 - escursione-monterano-cta-info-23-11-2025
• newsletter-escursione-monterano-23-11-2025 - escursione-monterano-logo-23-11-2025
• newsletter-escursione-monterano-23-11-2025 - escursione-monterano-link-sito-23-11-2025
• sms-escursione-monterano-23-11-2025 - escursione-monterano-link-sito-23-11-2025
• lazioeventi-escursione-monterano-23-11-2025 - escursione-monterano-link-sito-23-11-2025
• newsletter-escursione-monterano-23-11-2025 - escursione-monterano-link-chat-23-11-2025
• escursionismo.it-escursione-monterano-23-11-2025 - escursione-monterano-link-sito-23-11-2025
• gruppo-telegram-escursione-monterano-23-11-2025 - escursione-monterano-link-sito-23-11-2025
• pixelfed-barbagianni-14-11-2025 - link-homepage-14-11-2025
• pixelfed-escursione-monterano-23-11-2025 - escursione-monterano-link-sito-23-11-2025
• romatoday-escursione-camposecco-12-10-2025 - escursione-camposecco-link-sito-12-10-2025

If i make a filter for the word "camposecco", I correclty obtain only one row in the table result, in according with the right number of occurrences of the word itself (as you see above, in bold).

BUT: if filter for another word , for example, "barbagianni" the result is "nothing", even if the word is present inside the table report, as you see above (in bold).

What should happen?

The filter should show the right number of rows that contains a particular word.

How can this be reproduced?

See the steps in "What happened?" section.

Try to do various filters and sooner or later someone will be wrong.
It's impossible to understand the logic, on my part.

Matomo version

Matomo Wordpress Plugin Version 5.3.3

PHP version

8.3

Server operating system

Linux

What browsers are you seeing the problem on?

Chrome

Computer operating system

Win10

Relevant log output

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