When I installed Ubuntu 17.10, I noticed that the volume icon in Rhythmbox was gone:
But then I found this picture while wandering on the internet and I thought that maybe I'm the only one who has this problem since no one had brought it up.
So I just removed
rhythmbox-plugin-alternative-toolbar as a workaround solution.
But yesterday, I installed Ubuntu 17.10 for my friend and he had the exact same problem as I did.
So, is there any way for me to retrieve the missing volume icon?