It’s not worked
In PalichMos we usualy used this form to insert rows into material receipt. Then we change locators in lines. It's faster this way.
, in my test it worked but selecting a different warehouse, not a different locator in the same warehouse.
The patch looks more logical than what we have now. However, if we don’t remove the default locator logic in the code now, the locator field should be allowed empty, otherwise the discrepancy between code and UI is confusing.