Dear Maintainer, unfortunately I got the impression that upstream bugs [1] and [2] would really have been the same and therefore assumed the patch [2] would actually fix this bug too. Actually I guess just [1] is the right one - based on the linked retrace.fedoraproject.org backtrace.
However, on a second look, I found there got another "xml" patch applied upstream that matches even better [3]. This time I rebuilt 0.4.8-1 with the patch in [3] applied and could not reproduce the crash when saving/loading. In this short test I received no crash that would need my previous proposed upstream patch, so I am not sure if that should stay or be dropped. Kind regards, Bernhard [1] https://github.com/freeorion/freeorion/issues/2406 [2] https://github.com/freeorion/freeorion/issues/2365 [3] https://github.com/freeorion/freeorion/commit/3e840f8d747fd0e6a513f3ef0278d3931f813109