Verified. I had a bunch of nodes named like "Sean's Workstation" and removing the apostrophe fixes the missing panel. I would bump up the priority given that this makes matrix builds non-functional and there is no hint as to how to fix it. I've been avoiding matrix builds for almost a year because I thought they were broken.

Code changed in jenkins
User: Kohsuke Kawaguchi
Path:
changelog.html
core/src/main/java/hudson/Functions.java
core/src/main/java/hudson/matrix/LabelAxis.java
core/src/main/resources/hudson/matrix/LabelAxis/config.jelly
test/src/test/groovy/hudson/matrix/MatrixProjectTest.groovy
http://jenkins-ci.org/commit/jenkins/f46e44bbafb6de5c1757f63b8e3447a4743686ec
Log:
[FIXED JENKINS-9009] Fixed a bug in handling ' and " in matrix build
label axis

Integrated in jenkins_main_trunk #659
[FIXED JENKINS-9009] Fixed a bug in handling ' and " in matrix build

Kohsuke Kawaguchi : f46e44bbafb6de5c1757f63b8e3447a4743686ec
Files :

• core/src/main/java/hudson/Functions.java
• test/src/test/groovy/hudson/matrix/MatrixProjectTest.groovy
• core/src/main/resources/hudson/matrix/LabelAxis/config.jelly
• core/src/main/java/hudson/matrix/LabelAxis.java
• changelog.html

I have confirmed that none of my slave names include single or double quote characters, and yet i still have an empty matrix build label axis. I'm not convinced that I've run into a defect, yet, and am hoping somebody provide me some suggestions for debugging this issue further.

my environment:
Windows 7
Jenkins v1.4.15
seeing problem on IE 8 & Firefox 4.0.1

.

just confirmed that the problem does not occur in Jenkins v1.409.

Code changed in jenkins
User: Kohsuke Kawaguchi
Path:
changelog.html
core/src/main/java/hudson/Functions.java
core/src/main/java/hudson/matrix/LabelAxis.java
core/src/main/resources/hudson/matrix/LabelAxis/config.jelly
test/src/test/groovy/hudson/matrix/MatrixProjectTest.groovy
http://jenkins-ci.org/commit/jenkins/f46e44bbafb6de5c1757f63b8e3447a4743686ec
Log:
[FIXED JENKINS-9009] Fixed a bug in handling ' and " in matrix build
label axis

Code changed in jenkins
User: Kohsuke Kawaguchi
Path:
core/src/main/java/hudson/matrix/LabelAxis.java
core/src/main/resources/hudson/matrix/LabelAxis/config.jelly
test/src/test/groovy/hudson/matrix/MatrixProjectTest.groovy
http://jenkins-ci.org/commit/matrix-project-plugin/eb607367cdf55bd9612b51f799e89845d15c8791
Log:
[FIXED JENKINS-9009] Fixed a bug in handling ' and " in matrix build
label axis

Originally-Committed-As: f46e44bbafb6de5c1757f63b8e3447a4743686ec