Firefox Pinned Tab Icons

Hello, I don’t know if this is the right place to be asking this, but since I updated Firefox to version 44.0.1, my pinned tabs are showing a globe icon instead of the usual icon and the usual icon won’t show until I refresh the pages. How can I fix this? Here’s a screencap:
http://i220.photobucket.com/albums/dd91/Infernoflower/Icons%20Problem.jpg

https://support.mozilla.org/en-US/kb/get-community-support

This should be in the General sub-forum, if seeking help here, as far as I’m aware this is a firefox issue.

The first thing I would suggest is updating FF as it is now on 44.0.2.

Second, what FF theme are you using ?
Have you tried using the default theme and see if you still have the same issue.

I have many pinned tabs and they are still present and they are displaying the correct icons.

I also use Tab Mix Plus to manage Tabs, so I don’t know if this also manages the icons.