Decoded fields are incorrect after clicking away

[nbarbettini]

Steps to reproduce:

1. Go to http://jsonwebtoken.io
2. Paste this JWT:

eyJraWQiOiI0VlBWTEI2SzQ0UllTS1JSVkFCNFRFQk9YIiwic3R0IjoiYWNjZXNzIiwiYWxnIjoiSFMyNTYifQ.eyJqdGkiOiIyUXd0WmVQNlhRVnRzOVVqdEhnbk1XIiwiaWF0IjoxNDY5MDQwODM2LCJpc3MiOiJodHRwczovL2FwaS5zdG9ybXBhdGguY29tL3YxL2FwcGxpY2F0aW9ucy83T2wzNzdIVTA2OGxhZ0NZazdVOVhTIiwic3ViIjoiaHR0cHM6Ly9hcGkuc3Rvcm1wYXRoLmNvbS92MS9hY2NvdW50cy81TXdMZWFpd3dSaEZUcXl3aTRvU0xRIiwiZXhwIjoxNDY5MDQ0NDM2LCJydGkiOiIyUXd0WmI1MWNxQ3ZGS09zaDFwV2tTIn0.dIGVPO0RlXDvfAXyuH6wshGQA1YUTwDDa9rK8H-p02I

1. Notice the header has 4 elements, and the exp claim is 1469044436
2. Click outside of the JWT String text box
3. The header now has only 2 elements, and the exp has been updated

[pmiller7]

"tid" header goes missing as well