The screenshot for the "Other Stuff Screen" section in VoiceAttackHelp.pdf still has the "Select a special action..." dropdown on it, and the text still references said dropdown.
In addition, it notes
Note: for some of you VoiceAttack old-schoolers that want to use the dropdown list as it USED to be, simply hold down CTRL while clicking the, 'Other' button.
Ctrl-clicking the "Other >" button instead adds a "Start VoiceAttack Listening" action to the action list, without displaying the context menu(or the referenced dropdown, once the window opens).
EDIT: Fixed with v126.96.36.199