We just upgraded to 2018.2.6, and some users are getting this error (but not others) when viewing the Task Summary tab of a deployment.
Octopus v2018.2.6
TypeError: Cannot read property ‘State’ of undefined
State (/app/areas/projects/components/Releases/LifecycleProgression/LifecycleProgression.tsx:230:24)
filter (/app/areas/projects/components/Releases/LifecycleProgression/LifecycleProgression.tsx:228:69)
renderRedeploymentButtonForPhase (/app/areas/projects/components/Releases/LifecycleProgression/LifecycleProgression.tsx:151:30)
renderPhaseRows (/app/areas/projects/components/Releases/LifecycleProgression/LifecycleProgression.tsx:113:16)
renderPhaseRows (/app/areas/projects/components/Releases/LifecycleProgression/LifecycleProgression.tsx:111:22)
body (/app/areas/projects/components/Releases/LifecycleProgression/LifecycleProgression.tsx:72:17)
renderChildren (/app/components/PermissionCheck/PermissionCheck.tsx:23:14)
renderChildren (/app/components/PermissionCheck/PermissionCheck.tsx:23:27)