I am using qgis to create polygons in a postgis layer. I can create polygons and save them without a problem, but I am unable to delete them or use the node tool to reposition the points of existing polygons. Editing is enabled, but both the node tool and delete selected tool are greyed out (even when a feature in the current layer is selected):
I have seen posts elsewhere suggesting that these sorts of edits should be possible. Is this a bug in the current release of qgis, or are these features simply not supported?
It turns out I can't edit any attributes in the attribute table, not even when using the "add feature" button in the attribute table.