Navigation Labels lost after second save in admin create nav save menu section

Comment: I have lost navigation labels after the 4.5 update on editing and saving them. If you dont save them then they are fine. I am sure a lot of people will loose their language labels when they update and thats really a shame. I have just tried with wp 4.4.2 and it works fine. The problem is the wp 4.5 update. Will you be supporting 4.5 soon?

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