Non-new media in my library is filed under "This month" when sorting by Insertion date

Description

When sorting in Album and Tracks tabs is set to "Recently added"/"Insertion date", I notice that except from the latest media insertion, all of my library (about 13,000 songs) is filed under "This month", regardless of the actual date of insertion (which goes back to at least last November)

Expected behavior

The media is sorted under accurate labels

Steps to reproduce

1. Add files to media library
2. In either the Album or Tracks tab, click on three-dot button > Sort By... > Recently Added
3. Check the sorting labels after a period of time of more than 1 month

Screenshot / video

Context

App version

3.5.4 (Google Play Store)

Android version

12

Device model

Crosscall Action-X5

App mode

Smartphone