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If I have the all-in-one-event-calendar plugin activated when I set up the Matomo plugin, the Matomo CSS compiles in correctly and returns nonExistingSelectorOnlyForReplacementOfCssFiles style blocks with local paths similar to this issue:
https://projectdmc.org/support/topic/lessc-compiler-interferes-with-matomo-for-wordpress/
This causes the reporting UI to display incorrectly (since the CSS is not being fully loaded). If I disable all-in-one-event-calendar prior to installing Matomo, the problem does not occur, and the correct CSS is cached (for the current plugin version), allowing me to re-enable all-in-one-event-calendar without issue. Should this conflict be fixed in the Matomo plugin, all-in-one-event-calendar, or both?