Wait until the edit form stored the changes made so far. The form saves them in the background a moment after each change, as a draft only the author sees, and marks it with "Showing your unsaved changes".
Examples
When I wait for the edit form to store my changes
When we wait for the edit form to store our changes
And I wait for the edit form to store my changes
And we wait for the edit form to store our changes
Then I wait for the edit form to store my changes
Pattern
When(/^(I |we )*wait for the edit form to store (?:my|our) changes$/, …)
Part of @webship-js/craft-cms-steps (github.com/webship/craft-cms-steps), a step pack for Webship-js 2.0.x.