I just upgraded to latest release of QGIS (QGIS version 2.18.10 64bit, QGIS code revision 59e0f78). When I try to copy/paste a feature in a vector layer, I get:
Could not commit changes to layer reader
Errors: ERROR: 1 feature(s) not added - geometry type is not compatible with the current layer.
Copy/paste worked fine with 2.18.9 and previous versions. Anyone else seeing this issue?