Cannot read property source_code of undefined

[TomashKhamlai]

Preconditions

1. Magento in Multistock Mode
2. Magento CE MSI

Steps to reproduce

1. Start creating Simple Product as usual
2. Click Add Sources and select all sources (two or more) and click Done
3. Press F12
4. Instead of specifying Qty for each source, click on remove icon in the Default Source row.

Expected result

1. No error in the browser console

Actual result

1. An error in the browser console (Google Chome)
   

[naydav]

#997