Bug report #17464
Preview in Data-defined size legend dialog doesn't scale symbols size when separated legend items options is selected
|Affected QGIS version:||master||Regression?:||No|
|Operating System:||Easy fix?:||No|
|Pull Request or Patch supplied:||No||Resolution:|
|Crashes QGIS or corrupts data:||No||Copied to github as #:||25361|
In Vector Layer Properties dialog --> Diagrams, set a pie chart diagram and add your fields
In the Size tab, set a variable size in order to enable in the Rendering tab, the "legend entries for diagram size" button
Click the legend entries button and open the Data-defined size legend
Select the "Separated legend items"
In the preview section the symbols are displayed as a square symbol.
I think the user would expect to see them the way they would be displayed in the legend, with real proportions and vertically aligned.