[CCleaner v5.32.6129 (x64) & Firefox 55 (x64)]

Same thing in my topic here. It happens only with 3 sites in my bookmarks. Hope Piriform could fix it soon...

[CCleaner cleanup and Firefox.]

So this has been an going issue with the Firefox as they have changed the way "favicons" are handled. But Devs are working on a way to handle the issue as they thought it was fixed in 5.34/5 

 

 

Try the solutions in this thread as possible workaround in the mean time:  https://forum.piriform.com/index.php?showtopic=48688&p=285717

I don't think it's Firefox issue because only 3 icons disappear there, not all of them.

[CCleaner cleanup and Firefox.]

I use CCleaner 5.35.62.10 and Firefox 56.0.1. I noticed that everytime I clean my system with CCleaner some icons disappears in Firefox bookmarks or looks incorrectly (when some site has an icon from different site). I see this issue with 3 sites: 1) https://www.comss.ru/ 2) https://forum.adguard.com/index.php 3) http://rutracker.org/forum/index.php All these sites pinned in my bookmarks and they lose their icons after cleaning. Also these sites has wrong icon as I said, comss.ru has microsoft icon sometimes and rutracker.org has a gmail's "G" . Same thing happens with https://eromainstream.net/ - it also looses icon after cleanup...