You need to implement your own editorLock function, which is passed to the parameters. This function, like most SlickGrid, is poorly documented, you can look through the SlickGrid source code and look for a function called commitCurrentEdit .
An example editorLock is located in slick.core.js
Also, before rendering the grid, you can try to do this:
Slick.GlobalEditorLock.commitCurrentEdit = function(){ return true; }
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