Dock: the last favourite app goes below the "not favourite using" line

[onionxenzia]

Distribution (run cat /etc/os-release):
NAME="Pop!_OS"
VERSION="22.04 LTS"
ID=pop
ID_LIKE="ubuntu debian"
PRETTY_NAME="Pop!_OS 22.04 LTS"
VERSION_ID="22.04"
HOME_URL="https://pop.system76.com"
SUPPORT_URL="https://support.system76.com"
BUG_REPORT_URL="https://github.com/pop-os/pop/issues"
PRIVACY_POLICY_URL="https://system76.com/privacy"
VERSION_CODENAME=jammy
UBUNTU_CODENAME=jammy
LOGO=distributor-logo-pop-os

Related Application and/or Package Version (run apt policy $PACKAGE NAME):

Issue/Bug Description:

When removing or changing the position of an app in the dock (except for the last one) the last "favourite" app goes below the line between favourite apps and the not favourite currently in use.
It remains like this until a favourite app gets clicked.

Steps to reproduce (if you know):
Given above

Expected behavior:
The last app should remain above the line (or on the left when with the dock is on the bottom of the screen)

Other Notes:

[jacobgkau]

I'm able to recreate this.