I’m working in Toad Beta Version 18.104.22.1681.
The Keyboard shortcut of Ctrl-K, Ctrl-C, to comment and Ctrl-K Ctrl-U to uncomment does not work in my editing
Selecting Edit->Advanced->Comment (Ctrl-K, Ctrl-C) to comment out code works. Other Mangement Studio short cut keys work, e.g. L+Shift+Control makes selected text Lowercase.
Returning to the default keyboard shortcuts does not work. Using the Toad For Oracle keyboard shortcuts do work for Comment/Uncomment, i.e. OemMinux+Control