After yesterday's upgrade of Jenkins from 2.140 to 2.146 and several plugins, to many to enumerate, our pipeline jobs now generates loads of jacoco Coverage reports and Trends graphs. The jobs can hardly be opened probably due to the amount of data to load and they take forever to build. What has happened? I'am building at the moment so I'll add relevant data from the log files if I find any suspicous printouts.   

Very similar to this issue:

http://jenkins-ci.361315.n4.nabble.com/jacoco-plugin-broken-after-update-of-Pipeline-Maven-Integration-plugin-td4948864.html