This is a follow-up issue for #404, as requested by @uwolfer.
The "topic" input field permits to enter values containing spaces, but then later the plugin fails to create correct destination references from it.
So if a destination reference containing spaces can be used when quoted, escaped or encoded somehow, please update the plugin in order to add that capability.
Otherwise, please make sure that field validation kicks in in order to avoid users from entering something like "Bug xy" in the topic field.
Please make sure that other input fields, which might have similar issues, are treated correctly as well.
This is a follow-up issue for #404, as requested by @uwolfer.
The "topic" input field permits to enter values containing spaces, but then later the plugin fails to create correct destination references from it.