I made a copy of the default theme via admin center to work with. In the footer of the new theme the RSS graphic is missing. ;)
hmm... that graphic comes from awesomefont... could it be the css is not moved?
font-awesome.css is copied into the new theme folder.
Edit: But the folder "webfonts" is missing.
The mobile menu icons are missing too.
Good catch ...
For now make a copy of the webfonts directory under the new theme directory you created.
Looks like we need to replicate that directory during the theme copy process. Part of me wants to put them in a central location so all the themes point to them but there is no ideal way to do that (that I am aware)
ETA: for now fixed here https://github.com/Spuds/Elkarte/commit/ed71cd151884a3eb08fc13265b3a56e9aeb83606
hmm... there should be a better way to create a new theme... O:-)