Problem with selecting source to assign on product page

[smoskaluk]

Preconditions

Magento MSI
Product created and assigned to default Source
2 additional Sources created

Steps to reproduce

Open product page in admin to edit
Click button "Assign Sources"
select one of the additional sources to assign

Expected result

Only one Source have to be selected

Actual result

Both Sources are selected

[RomaKis]

This is Magento bug with ui grid. I created public issue for it magento/magento2#13660.