Bug report #11289
Map Canvas doesn't refresh well with diagrams on vector layer
|Affected QGIS version:
|Pull Request or Patch supplied:
|Crashes QGIS or corrupts data:
|Copied to github as #:
Add a vector layer and open its properties dialog
In Diagrams tab, check "display diagrams" ans set diagrams properties as you want
Press OK. You must get diagrams on your features
uncheck the layer visibility in the TOC and check it back.
You then will see the features in the layer but no diagram will appear.
Any other change you'll do in the TOC resulting in the refreshment of the map canvas (add new layer, show/hide layer...) won't make visible your diagram.
The only way I found to display the diagrams is to change map canvas extent (pan or zoom)