Recently I'm experiencing some odd behavior from Xcode. It jump up and down on its own, it does not render codes correctly. Like this screenshot ↓

Xcode screenshot - odd behavior

It's driving me crazy. Have this ever occurred to anybody else? Is there a solution?

P.S. this problem happens with both Objective-C and Objective-C++ and with every theme I use. (Currently I'm using xcode 6.3)

2 Answers 2


Turn off the Show live issues checkbox in Xcode > Preferences > General (found near the top of the panel).

I was experiencing the same issue. I found this answer through Editor glitch when editing near end of long file in Apple's Developer Forums.

It worked for me running Xcode 7.3 with a 2706 line file. The glitch happened around line 2250.

  • 1
    I hate having to disable a feature, but it did fix the problem. It was happening to me in a file of only 435 lines.
    – dmzza
    May 25, 2017 at 1:10

I think that was a bug at XCode 6. Since XCode 7 I have not encountered this problem.

  • I'm not your downvoter, but this still happens to me in xcode 7.3.1, so perhaps the downvoter had a similar experience
    – CupawnTae
    Aug 27, 2016 at 9:52
  • This bug is happening to me in Xcode 8.3.2
    – dmzza
    May 25, 2017 at 1:12

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