Starting from the visual editor, the addition of numbers to equations in scientific texts requires now a trip via the source editor where a prefix {{NumBlk|:| and a postfix |{{EquationRef|1}}}} must be added to the math formula definition.
It would be helpful to automate this action inside the visual editor via a shortcut button or key sequence, such that the author can stay inside the visual editor.
This is a request and not a bug report