Glad to hear that you’ve solved the problem.
Obsidian is built on a platform called Electron which provides much function. That means, if obsidian updates the Electron version, you will have to download the latest installer, and reinstall it to make some new features take effect.
You could find this on Obsidian Release Note ( like here ), or you could just check Setting → About to see whether you should reinstall.
Installer version v0.14.6 work fine on obsidian v0.15.8, just enjoy it!