🚧 NOTE: The future of vimiv is in the Qt port as discussed in this issue. New features will only be implemented there and many improvements have already been made. Sticking with this deprecated version is only recommended if you require a more stable software. In case you miss anything in the Qt port, please open an issue. Check the roadmap for more details.
Therefore, if you wish to implement a new feature, please consider doing this in the Qt port. You can find some general information on its website as well as some helpful starting points for contributing there.
If possible, please reproduce the bug running with --debug and include the content of the created logfile in $XDG_DATA_HOME/vimiv/vimiv.log.
Vimiv tries to maintain backward compatibility with the latest Ubuntu LTS version. Supporting older systems is not planned and things will almost certainly break on them.