The disable command does not appear under the edit menu when the script is selected.
The usual keyboard command "command-/" opens Filemaker Pro 17 help in Safari.
It does not disable the target script.
Have not yet tested without the two plugins.
Will revert back to FMP 16 for time being: can't test scripts without disable command.
FMPA 17 build: 18.104.22.168
Plugins: 2empowerFM DA v3.3 and 2empowerFM Parent v2.62
Mac : iMac27 I7 @4GHz, 32GB RAM, 1TB SSD