logo disappears when plugin is on

Hello, the question will be quite strange, kind of nonsense, but it irritates me mercilessly.
The website logo disappears in firefox when I turn on the plugin, but only on my computer. When I turn off the plugin then it comes back. Are there any plugins that, in combination with the cookie plugin, can cause this?

I will add that on another firefox computer everything is ok.
Maybe someone had a similar situation?

Regards
Tomek