User entered   is missing from source when fillEmptyblocks = false

[prasad]

1)set CK Editor configuration fillEmptyBlocks to false. 2)Inset a table using the toolbar. 3)Click source button 4)Insert   in first td. 5)Come back to design and again go to Source view.

Actual Outcome: User entered   is missing under the td

Expected Outcome: User entered   should be present in source view

[Jakub Ś]

Problem can be reproduced from CKEditor 3.5 in both CKE 3.x and 4.x (when fillEmptyBlocks was introduced) in all Browsers. If someone tries to insert sole   it is removed but if someone inserts "  text" then   stays.

I'm confirming this ticket. This can however be won't fix issue if fillEmptyBlocks may remove sole empty spaces in block elements by design and there is no other way to do this.