[co2plume] test fails
The last change to the reference solution happened shortly before 2.11 in 703b1df3. @timok Can you please find out if the test passed back then for you? It fails on buildbot both with master and release. For me, it also fails with master, 2.11 and 2.10. It passes with 2.9 but too many changes happened after that so that I consider it to be too difficult for me to track it down.