Firefox: Trying to calculate hash of a folder that isn't loaded

Describe the bug

After last Firefox update I’m getting this in one of my machines:

Trying to calculate hash of a folder that isn’t loaded

To Reproduce

Steps to reproduce the behavior:

1. Open the browser
2. Wait for sync

Expected behavior

Be able to sync bookmarks

Screenshots

Desktop

• OS: Windows 10
• Browser Firefox
• Browser 88.0
• Floccus version: 4.6.4
• Floccus sync method: webdav

Server

(please complete the following information)

• OS: [e.g. centOS 7]
• Nextcloud version: [if applicable]
• Bookmarks app version: [if applicable]

Debug log

2021-04-30T23:14:39.902Z Starting sync process for account #########
2021-04-30T23:14:39.923Z onSyncStart: begin
2021-04-30T23:14:39.924Z https://########/bookmarks.xbel.lock
2021-04-30T23:14:39.932Z https://########/bookmarks.xbel.lock
2021-04-30T23:14:39.966Z onSyncStart: completed
2021-04-30T23:14:39.969Z Using "default" strategy
2021-04-30T23:14:39.998Z Overriding title of built-in node menu________ Bookmarks Menu => Bookmarks Menu
2021-04-30T23:14:39.998Z Overriding title of built-in node toolbar_____ Bookmarks Toolbar => Bookmarks Bar
2021-04-30T23:14:39.999Z Overriding title of built-in node unfiled_____ Other Bookmarks => Other Bookmarks
2021-04-30T23:14:40.008Z Syncing failed with Trying to calculate hash of a folder that isn't loaded
2021-04-30T23:14:40.010Z onSyncFail

• Debug log provided

Additional context

Please remove #872.

[marcelklehr]

Closing this for now, as I believe the above patch should fix this. Let me know if this happens again after the next release.

[marcelklehr]

you can

1. unzip the package
2. go to about:debugging
3. Load the manifest.json as a temporary addon