Specific dock items disappear when arranging dock

[kapkic]

Distribution (run cat /etc/os-release):
NAME="Pop!_OS"
VERSION="21.04"
ID=pop
ID_LIKE="ubuntu debian"
PRETTY_NAME="Pop!_OS 21.04"
VERSION_ID="21.04"
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=hirsute
UBUNTU_CODENAME=hirsute
LOGO=distributor-logo-pop-os

Related Application and/or Package Version (run apt policy $PACKAGE NAME):
gnome-control-center:
Installed: 1:3.38.3-1pop1162455502021.04668f3c0
Candidate: 1:3.38.3-1pop1162455502021.04668f3c0
Version table:
1:3.38.5-1ubuntu1 500
500 http://us.archive.ubuntu.com/ubuntu hirsute/main amd64 Packages
*** 1:3.38.3-1pop1162455502021.04~668f3c0 1001
1001 http://ppa.launchpad.net/system76/pop/ubuntu hirsute/main amd64 Packages
100 /var/lib/dpkg/status

Issue/Bug Description:
Specific dock items disappear when arranging dock

When I was arranging my dock items, if I tried to move any of the "Applications", "Launcher" or "Workspaces" icons; they would get removed (which can also be seen from desktop part). But if I tried to arrange any other app, also changing the "Applications" icon's order, it goes through.
It can be easily observed from the desktop/dock settings in gnome-control-center.

Steps to reproduce (if you know):
1-Pick one of the "Applications", "Launcher" or "Workspaces" items on dock
2-Click and hold, move to a space between two other items
3-Release (the item will have disappeared)

Expected behavior:
The item should move between other two dock items where it has been placed into, instead of disappearing.

[bflanagin]

I'm not seeing the issue on my end. Could you report back with the output of apt policy pop-cosmic

[jacobgkau]

This looks like a duplicate of pop-os/cosmic-dock#24, which was fixed by pop-os/desktop-widget#29. (It will take some time for that update to make its way into the stable PPA.)

[kapkic]

@bflanagin, yes; I've other people try this and they also said them not being able to see the issue.
Here's the output.

pop-cosmic:
  Installed: 0.1.0~1625073306~21.04~c3bd569
  Candidate: 0.1.0~1625073306~21.04~c3bd569
  Version table:
 *** 0.1.0~1625073306~21.04~c3bd569 1001
       1001 http://ppa.launchpad.net/system76/pop/ubuntu hirsute/main amd64 Packages
       1001 http://ppa.launchpad.net/system76/pop/ubuntu hirsute/main i386 Packages
        100 /var/lib/dpkg/status

Thanks @jacobgkau, yes; I didn't realize this was reported before. I'm closing the issue now. Will reopen if the problem keeps continuing after the stable PPA updates.