Cloud Sync Fails silently (fixed by reinstalling) when tab data exist from a previously linked cloud sync

[Shadowrs]

Short description

click Cloud Sync, it fails silently (no user feedback, UI doesnt update)
This happens when there is already saved/pre-existing tabs from a previously-linked google acc cloud save.

Steps to reproduce

1. Start browser with clean profile
2. Install Tab Session Manager
3. Sign into google, Cloud sync
4. Remove google acc
5. Re-add google acc
6. Attempt to sync, it fails.
7. to fix: Uninstall extension (removing all tab data) -> reinstall, add google acc, sync, works

Expected result

Cloud sync works or at least informs user to nuke their install/wipe old data first.

Actual result

I enabled debug but ctrl+shift+J opens console, there is no output in Edge.

When clicking sync:

when you click to hide/show the extension, then it shows this:

Platform information

• Platform (OS): Win 11
• Version of browser: Edge Version 122.0.2365.80 (Official build) (64-bit)
• Version of Tab Session Manager: Version 6.12.1

Additional context

happens on all browsers, same google account as cloud storage.

• firefox
• chrome
• Edge