hmm! We did extensive testing on ios8 with no issues before rolling out the 2015u1.1 release.
thinking… what could be the issue.
Has anything else changed since your previous test with the earlier version of GapDebug?
For example:
1) did you rebuild the test app without using a developer certificate?
or
2) did you confirm that the safari webkit-inspector setting is still enabled?
Lastly are you testing on a device or simulator? Sounds like your on a device…