I've some problems with digitizing.
If I draw a line or a polygon, the line or polygon is saved in the attribute list, but not visible and its location is not saved either (when I zoom to the object it goes to coordinates 0,0).
Both the project CRS and layer CRS are the same.
Sometimes it happens, sometimes not, and I don't have any idea what I might be doing differently. If it happens, most of the time QGIS crashes when I try to save the changes.
I'm using QGIS, Lisboa version