ios - UIButton title alignment not changing to right direction in RTL -


i having application in both ltr , rtl languages. fine uibutton title alignment not changing right though uibutton flips itself. here screenshot: uibutton in rtl

alignment given

constraints given default language english:

constraints given default language english:

what issue , why happens? need set title programatically aligned right?

use right alignment storyboard

enter image description here

or programmatically 

buttonshowonmap.contenthorizontalalignment = .left//for left alignment  buttonshowonmap.contenthorizontalalignment = .right//for right alignment

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