Massimo Valentini authored Sep 17, 2019 and Ell committed Sep 18, 2019

In GimpBufferSourceBox, dup the selected buffer (and flush the
pickable to make sure it's fully rendered) instead of using it
directly in the source node.  This avoids chunking artifacts when
the buffer's content depends on the filter output, such as when
using the affected layer, or a dependent projection, as input.