I just patrolled Earth for a good 30 minutes. I did patrols in 3 different areas. Not once did I see a sword bearer appear. I gave it a good amount of time in each area. Bungie you may want to check this out. This is after 1.1.2 update.
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#Swordbearer
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I was there last night on earth cosmodrome for 2 hours after update and no sign of Knight sword bearers on any locations. I was doing a bounty for that and that's how I noticed they were not spawning on any locations after the 1.1.2 update yesterday. Bungie should definitely take a look at this as this involves 2 bounties that I know of. Not to mention the gun that you get randomly after killing the knight sword bearer. I hope they fix this soon. Thanks guys.