I don’t know if this bug is related to UI on linux or to 4.7 for all platforms, but i don’t see all assets in content browser.
E.g. if i start new project with starter content, there is only one file listed in content browser. But if i restart editor, all content is listed as expected.
Also if i copy assets from other projects to content folder of currently opened project, content browser file list becomes broken (does not react on mouse interactions), but after editor restart everything looks ok.
See screenshot: left side - nautilus (ubuntu file browser), right side - ue4editor (compiled from 4.7 branch after [this commit])