Where to report QGIS and QGIS-Plugin bugs?

For QGIS, see https://issues.qgis.org/projects/qgis/issues

For plugins, see http://plugins.qgis.org/plugins/ and select the plugin, then go to the Details tab.

You need an OSGeo account to fill tickets. After creating that, go to your OSGeo user page. Then you can login to hub.qgis.org with the same user ID.

Many QGIS Plugins uses GitHub as their primary issue tracker. Issue tracker is usually specified in the plugin's metadata <home>/.qgis2/python/plugins/<plugin>/metadata.txt.

For plugins that use GitHub issue tracker, one can use Report plugin to facilitate reporting of the bugs/enhancements.