The icons seem to be broken in the newest insider build (1.54.0-insider). This problem is not present in the regular build (1.53.2).


Version: 1.54.0-insider
Commit: a699ffaee62010c4634d301da2bbdb7646b8d1da
Date: 2021-02-15T05:17:46.733Z
Electron: 11.2.3
Chrome: 87.0.4280.141
Node.js: 12.18.3
V8: 8.7.220.31-electron.0
OS: Linux x64 5.8.0-43-generic
Extension version: v0.0.196

Yes, I can confirm they're not appearing. Neither .svg icons, octicons or codicons are working, so I presume something has changed in the tree rendering.
Will investigate.
@Gruntfuggly Great thanks a lot! Let me know if you need additional info.
codicons are working, but not octicons or svgs. These are both accessed using globalStoragePath which looks like it has been deprecated. I'm guessing insiders may have removed support or changed it some other way.
I'll update to the new globalStorageUri and see if that fixes it.
Hmmm. It seems to not like pointing the icon path to files stored outside the extension folder. I've raised an issue: https://github.com/microsoft/vscode/issues/116735
Fixed in the latest insiders.