After the latest upgrade of Jenkins together with all the latest Plugins, we started to see strange behaviour: Some Jobs(Not all, only some of them) started to lost the information: when it launched, result of lunch and other.

How it looks: When the job launched all looked fine, the result showed and everything at place. But after some time up to 12h or after Jenkins restart the information gone. I located that build.xml file contain right info right before, but after thise time the information has changed and fully gone. I can't figure out what can cause this. I tried put the previous file back but it doesn't work.

I've tried rolling back the Jenkins or plugins, tried to check permissions on all files in Jenkins folder, Looked in Logs, and unable to pinpoint the problem.

One issue we faced before was a lack of space on Jenkins, maybe something has broken, but I'm unable to found.

I was also tired to recreate those Jobs from scratch but the new Jobs started to have the same course.

Something has broken on Job level.