Comment 4 for bug 347453

Yes. This is obvious a very old bug now and exiting the cell that additional space is properly removed but perhaps it shouldn't be introduced.

It seems the added whitespace isn't actually there but just the appearance of it. So, if you now press backspace to delete that whitespace, it is the last character of the content that's removed.

Example, pasting "test" content value from another cell, you see what appears to be a space suffix, but deleting that space deletes the last character non-obviously. You see "test" as expected in the input bar with the suffix space removed but in the cell you see the reality "tes". That truncated result then is the stored value when you exit the cell.