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[GH-ISSUE #1115] floccus not sync favicon between client of Firefox #743

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opened 2026-02-25 22:37:59 +03:00 by kerem · 4 comments

kerem commented

2026-02-25 22:37:59 +03:00

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Originally created by @tomergam on GitHub (Apr 14, 2022).
Original GitHub issue: https://github.com/floccusaddon/floccus/issues/1115

Which version of floccus are you using?

Firefox 99.0.1 (64-bit) - Windows

Sync method

{"label"=>"Nextcloud Bookmarks"}

Which browser are you using?

Firefox 99.0.1 (64-bit)

Which version of Nextcloud Bookmarks are you using? (if relevant)

No response

Which version of Nextcloud? (if relevant)

v23.0.2

What kind of WebDAV server are you using? (if relevant)

No response

Describe the Bug

favicon is not sync between firefox client,
there is globe icon, only after opening the URL, the favicon showing

Expected Behavior

the favicon should appear in you environment after full sync

To Reproduce

Installed new clean browser with floccus extension

Debug log provided

I have provided a debug log file

Originally created by @tomergam on GitHub (Apr 14, 2022). Original GitHub issue: https://github.com/floccusaddon/floccus/issues/1115 ### Which version of floccus are you using? Firefox 99.0.1 (64-bit) - Windows ### Sync method {"label"=>"Nextcloud Bookmarks"} ### Which browser are you using? Firefox 99.0.1 (64-bit) ### Which version of Nextcloud Bookmarks are you using? (if relevant) _No response_ ### Which version of Nextcloud? (if relevant) v23.0.2 ### What kind of WebDAV server are you using? (if relevant) _No response_ ### Describe the Bug favicon is not sync between firefox client, there is globe icon, only after opening the URL, the favicon showing ### Expected Behavior the favicon should appear in you environment after full sync ### To Reproduce Installed new clean browser with floccus extension ### Debug log provided - [ ] I have provided a debug log file

kerem

2026-02-25 22:37:59 +03:00

closed this issue
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kerem commented

2026-02-25 22:37:59 +03:00

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@marcelklehr commented on GitHub (Apr 14, 2022):

Yep, this is a known limitation. (I should probably add this to the FAQ.) Also see #81 where this was first reported.

@marcelklehr commented on GitHub (Apr 14, 2022): Yep, this is a known limitation. (I should probably add this to the FAQ.) Also see #81 where this was first reported.

kerem commented

2026-02-25 22:37:59 +03:00

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@cracket commented on GitHub (Sep 26, 2022):

I will have to counter this bug, because I have observed something opposite.
I have pulled my bookmarks from webdav using floccus 4.17.1 on firefox esr 102.3.0 fresh installation.
Synchronization of thousands of items took 15 minutes. Half hour after synchronization machine was still experiencing heavy network traffic without any browser activity. I was shocked because FF was downloading every single favicon from the internet for each new bookmark that was pulled, and after another half hour every "globe" icon was replaced with original one.
So after some time firefox did synced favicons on it's own extremely slowing down my network connectivity.

This is obviously not a bug of floccus as far as I can see, but limitation of xbel. But if you discuss it - make sure you take into account privacy&performance impact related to it:

privacy: fetching favicons can leak correlation between pages browsed and bookmarked using different ip addresses, browsers and include private mode of single floccus user
performance: floccus should not be cascading extra load on machine&network

I recommend also reading a bug report from mozilla about favicons and impact of caching them:
https://bugzilla.mozilla.org/show_bug.cgi?id=1618257
which suggests that even if floccus synced favicons, ff would ignore the cache and reload favicons directly

There is also nice document mentioned there about favicon based fingerprinting
https://www.cs.uic.edu/~polakis/papers/solomos-ndss21.pdf

So I suggest keeping this issue "On hold" and participating in discussion about firefox behavior on favicons.

@cracket commented on GitHub (Sep 26, 2022): I will have to counter this bug, because I have observed something opposite. I have pulled my bookmarks from webdav using floccus 4.17.1 on firefox esr 102.3.0 fresh installation. Synchronization of thousands of items took 15 minutes. Half hour after synchronization machine was still experiencing heavy network traffic without any browser activity. I was shocked because FF was downloading every single favicon from the internet for each new bookmark that was pulled, and after another half hour every "globe" icon was replaced with original one. So after some time firefox did synced favicons on it's own extremely slowing down my network connectivity. This is obviously not a bug of floccus as far as I can see, but limitation of xbel. But if you discuss it - make sure you take into account privacy&performance impact related to it: - privacy: fetching favicons can leak correlation between pages browsed and bookmarked using different ip addresses, browsers and include private mode of single floccus user - performance: floccus should not be cascading extra load on machine&network I recommend also reading a bug report from mozilla about favicons and impact of caching them: https://bugzilla.mozilla.org/show_bug.cgi?id=1618257 which suggests that even if floccus synced favicons, ff would ignore the cache and reload favicons directly There is also nice document mentioned there about favicon based fingerprinting https://www.cs.uic.edu/~polakis/papers/solomos-ndss21.pdf So I suggest keeping this issue "On hold" and participating in discussion about firefox behavior on favicons.

kerem commented

2026-02-25 22:37:59 +03:00

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@marcelklehr commented on GitHub (Oct 7, 2022):

Thanks for the insights @cracket. I will close this issue in light of this.

@marcelklehr commented on GitHub (Oct 7, 2022): Thanks for the insights @cracket. I will close this issue in light of this.

kerem commented

2026-02-25 22:37:59 +03:00

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@github-actions[bot] commented on GitHub (Oct 8, 2023):

This issue has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.

@github-actions[bot] commented on GitHub (Oct 8, 2023): This issue has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.

kerem referenced this issue

2026-02-25 23:30:40 +03:00

[PR #743] [CLOSED] Bump webpack-merge from 4.2.2 to 5.7.0 #1731

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