After introduction, all folders “Up to Date”, but one device stuck in “Syncing” with empty “Out of Sync Items”

[gio1]

I have 3 devices:

• device A : the introducer (syncthing container on windows PC, v1.27.2, Linux (64-bit Intel/AMD Container))
• device B : laptop (syncthing container on windows PC v1.27.2, Linux (64-bit Intel/AMD Container))
• device C : android (syncthing play store application v1.27.2)

the container: https://hub.docker.com/r/syncthing/syncthing

the android app:

play.google.com

Syncthing

Open, trustworthy and decentralized file synchronizatio...

Free

Initially:

• B and C do not know each other
• B and C know A
• B and C have the same folders and all of them are up to date with A

Steps:

1. I set A as “introducer” for both B and C
2. B and C now know each other and set up automatically
3. After initial scan :
   • both B and C show all their folders “up to date”
   • C shows both remote devices “up to date”
   • B shows remote device A as “up to date”, but B shows remote device C “Syncthing (99%, 7.88 KiB)” and it shows also on “Out of sync items 1 item ~7.88 KiB”
4. if I click on “1 item ~7.88 KiB” on B, the pop that opens is just empty

Expected behaviour: device B shows remote device C as “up to date” (or at least B shows which items are NOT synced with C)

Screenshots

Device B:

Device C:

folders:

remote devices:

ADDITIONAL TRY:

Starting from the previous result I also tried:

1. In device B and C, remove the “introducer” flag of device A.
2. In device B, remove remote device C
3. In device C, remove remote device B
4. In device B, add manually remote device C
5. In device C, add manually remote device B

Still, I get the same result as before, that is:

• both B and C show all their folders “up to date”
• C shows both remote devices “up to date”
• B shows remote device A as “up to date”, but B shows remote device C “Syncthing (99%, 7.88 KiB)” and it shows also on “Out of sync items 1 item ~7.88 KiB”
• if I click on “1 item ~7.88 KiB” on B, the pop up that opens is just empty