Can you guess the projection that I used to display a world map at the picture below (EPSG code is left there because I doubt someone would recall it anyway)?
It is the World Bonne projection in QGIS (original shp's CRS is EPSG:4326). I already had some fun with Bonne in this post. The world got torn apart at scale 1:75 000 000. At bigger scales map renders normally:
Fortunately this issue can be easily resolved by disabling "feature simplification by default for newly added layers" under Settings -> Options -> Rendering.