KSieve Editor does not show controlling script

Hi there, running Linux Mint, I am using KSieve Editor 5.24.5 to edit some Sieve scripts. Each account lists all of the scripts except the controlling script calling the others, named “master”.

Does anyone have any tips why this may be? When I edit with other tools, including and the now defunct Thunderbird plug in and sieve-connect on the command line, I can see all scripts including “master”.