It would be nice to have a list of Issue trackers, to see, where a specific issue should be reported. There are many different places to report an issue, and it’s not really easy to understand, which place is the right one. I think this list could be sticky here, or (at least) there should be a page at docs.openhab.org about that.
openhab2-addons - all Add-ons/extensions for openHAB 2.x - bindings, voice, etc.
openhab1-addons - all Add-ons/extensions for openHAB 1.x - actions, bindings, transformations, persistence etc.
openhabian - everything openhabian-related
openhab-docs - documentation
All repositories of the project are listed here.
I guess Smarthome Designer is also eclipse/smarthome?