I can not find DrawBot extension in file menu but it installed. In version 2.3.1 (911)
I have already deinstalled and installed again the plugins. Restarted booth the software and the system too.
Also a problem appeared with with showCoordinates.glyphsReporter.
It installed and active in Reporters, but it does not work.
Which showCoordinates? Please post bug reports as issues on the respective GitHub page (also accessible via the plugin manager), and make sure you are running the latest version.