The features to connect infill polygons together in order to get continuous extrusion for all infill patterns was not very stable. It is quite hard to reliably find a location where you can cross to another polygon and it often happens that that crossing doesn’t permit a crossing back, so that the bridge between two polygons cannot be created. The implementation is now improved.
Whereas it used to connect 65% of all polygons before it now connects 99.5%.
Hopefully this improvement can be merged to Ultimaker Cura shortly.
