I’m sure that the outdated version of Bravura on your system is the problem; the current version is 1.39, so 1.210 is quite old and there have been a bunch of changes since then. What I suggest you do is close down Dorico and any other applications that could be using the font, then check in both /Library/Fonts and ~/Library/Fonts (the former in the root of your hard disk, the latter in your user’s home folder; easiest to be sure of accessing them the right way using Go > Go To Folder in the Finder, since the Library folders are hidden by default on macOS), and remove Bravura.otf and BravuraText.otf from both places if you find them there. Then put Bravura.otf and BravuraText.otf from the redist/otf folder from the GitHub page into the /Library/Fonts folder, and that should do it. Alternatively, having removed the installed versions of Bravura and Bravura Text, simply running the Dorico 3.5.10 installer again should be sufficient to reinstall the correct versions of the fonts.