Cinnamon favorites applet does not sort by alphabet

Linux Mint 20.3 Cinnamon 64 bit
Cinnamon version 5.2.7
No daily builds
NVIDIA G98M [GeForce G 105M], NVIDIA driver
.xsession-errors attached

Issue
when adding folders to the favorites from within Nemo, the folders are sorted by alphabet in the relevant locations from within Nemo (see the nemo instances in screenshot 1), but not in the main taskbar menu and the star applet (see screenshot 1 and 2).

Screenshot 1

Screenshot 2

Steps to reproduce
I am not sure how to precisely reproduce.

• It may always have been like this
• It may be because I once deleted a parent folder of some favorited folders, which does not delete these favorites from the lists in the taskbar (which can be fixed by recreating these folders and unfavoriting them). Someone already reported this here, I think, but I can not find the issue right now. Possible that afterwards the sorting is broken.
• It may be because I once added export LC_COLLATE=C to the ~.profile (to modify the sorting in Nemo). But i removed this entry again.
• Another possible reason may be that I have restored previous system states with Timeshift a few times, which included data in the user and root user folders (aka, complete system restore)
• It may be my relatively old laptop
• ??? I am still learning Linux, can not help further. I wonder how this applet generates the list and if it resorts it whenever a favorite is added.

No, this is just not yet implemented. I will do it.

Expected behaviour
The favorites in the lists in the taskbar are sorted by alphabet.

Configuration info

{
    "head": {
        "type": "header",
        "description": "Settings"
    },
    "show-full-uri": {
        "type": "switch",
        "default": false,
        "description": "Display full paths in the list",
        "value": false
    },
    "__md5__": "47cfb84ecf716b6b4756ccdac7f369e4"
}

xsession-errors.txt
xsession-errors.old.txt

Start by tracing how favorite folders added from Nemo are displayed in Cinnamon's main taskbar menu and star applet, and compare their ordering with Nemo's alphabetical ordering. Confirm the behavior with the reported Linux Mint and Cinnamon versions; done means both Cinnamon favorite lists consistently sort folders alphabetically.