[Bug] Campaign Tracking in Dashboard - Incorrect total yearly value for campaign names

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What happened?

• I added the widget »acquisition campaigns - campain names« to the dashboard
• I checked the number of visits of campaigns for each month
  • A test campaign showed for january until september: 0, 0, 0, 7, 11, 7, 0, 0, 0 visitors
• Then switched to check the number of visits for the whole year
  • The test campaign shows a total value of 7 visitors - expected is 25

What should happen?

• Calculate the correct number of visits for a campaign name for the selected year

How can this be reproduced?

• Open Dashboard
• Add the widget »acquisition campaigns - campain names«
• Check the number of visits of a campaign for each month
• Change the selected timerange from month to year - widget calculates to low total values

However: I do not have the same problem in a different instance for another client with the same setup (Matomo version, PHP version, OS, …). So this bug has to be caused by a different reason, which is yet unknown.

Matomo version

5.1.1 (Update history 5.0.3,4.16.1,4.15.0)

PHP version

8.1.29

Server operating system

Linux

What browsers are you seeing the problem on?

Chrome

Computer operating system

Ubuntu Linux

Relevant log output

./console diagnostics:run
There are no problems with your Matomo setup. Give yourself a pat on the back.

Related information

It looks like a smiliar issue existed for the visitor count wiget a long time ago: #15170 (comment)

Validations

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• The provided steps to reproduce is a minimal reproducible of the Bug.