# GLFW OSX Sierra Issue: First Responder Issue

**URL:** <https://discourse.glfw.org/t/glfw-osx-sierra-issue-first-responder-issue/1264>\
**Category:** support\
**Created:** [February 8, 2019, 9:42pm UTC](https://discourse.glfw.org/t/glfw-osx-sierra-issue-first-responder-issue/1264 "2019-02-08T21:42:11Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![mCroswell](https://yyz1.discourse-cdn.com/flex035/user_avatar/discourse.glfw.org/mcroswell/32/230_2.png) [@mCroswell](https://discourse.glfw.org/u/mCroswell)\
**Post date:** [February 8, 2019, 9:42pm UTC](https://discourse.glfw.org/t/glfw-osx-sierra-issue-first-responder-issue/1264/1 "2019-02-08T21:42:11Z")

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When using glfwCreateWindow() on a mac running 10.12.6 (Sierra) with the glfw 3.2.1 installed (both with brew and also built libraries from github glfw source) I get this error:

2019-02-08 14:39:10.265386-0700 glfwTest[3858:10820155] [General] ERROR: Setting \<GLFWContentView: 0x100751df0\> as the first responder for window \<GLFWWindow: 0x100751650\>, but it is in a different window ((null))! This would eventually crash when the view is freed. The first responder will be set to nil.  
(  
0 AppKit 0x00007fff928a89cf -[NSWindow \_validateFirstResponder:] + 557  
1 AppKit 0x00007fff9202374c -[NSWindow \_setFirstResponder:] + 31  
2 AppKit 0x00007fff920cb9ce -[NSWindow \_realMakeFirstResponder:] + 406  
3 AppKit 0x00007fff920cb7e4 -[NSWindow makeFirstResponder:] + 123  
4 libglfw.3.dylib 0x0000000100304895 \_glfwPlatformCreateWindow + 631  
5 libglfw.3.dylib 0x0000000100300430 glfwCreateWindow + 487  
6 glfwTest 0x0000000100000e4b main + 139  
7 libdyld.dylib 0x00007fffa9d1d235 start + 1

Is there a branch I could pull with a fix, or could you point me to where I might fix it?

Thanks much!

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<div class="post-metadata">

**Author:** ![mmozeiko](https://yyz1.discourse-cdn.com/flex035/user_avatar/discourse.glfw.org/mmozeiko/32/29_2.png) [@mmozeiko](https://discourse.glfw.org/u/mmozeiko)\
**Post date:** [February 9, 2019, 1:36am UTC](https://discourse.glfw.org/t/glfw-osx-sierra-issue-first-responder-issue/1264/2 "2019-02-09T01:36:41Z")

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This seems to be same as these issues:

> <https://github.com/glfw/glfw/issues/908>

  

> <https://github.com/glfw/glfw/issues/876>

The fix for this is available here: [https://github.com/glfw/glfw/pull/883](https://github.com/glfw/glfw/pull/883)

Which was done after 3.2.1 release. I suggest trying with latest source from github, not from 3.2.1 release source. If that still happens - open issue on github (make sure you are really using latest source and not linking to brew provided library).