If calling the contour function multiple times, the error definition is screwed up but can be fixed by the mentioned bug fix. I still see the same part of the code in the current master version so I was wondering if this will be fixed in the future?
yes I know this workaround and it is working. But I spent one week of work to find this bug until I realised this is a known problem which is a bit frustrating. I just wanted to bring this up again to prevent other people from having the same trouble.
Thanks and cheers,