Help menu does not open in Tor Browser nightlies based on ESR60

When trying to open the Help menu after clicking on the "Hamburger menu" just a blank pane shows up and one sees

JavaScript error: chrome://browser/content/utilityOverlay.js, line 849: TypeError: document.getElementById(...) is null

in the terminal

To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information