Feature/improve tooltip of portfolio proportion chart (#1919)

* Hide title

* Update changelog

CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## Unreleased
 
+### Changed
+
+- Improved the tooltip of the portfolio proportion chart component
+
 ### Fixed
 
 - Fixed the missing platform name in the allocations by platform chart on the allocations page

libs/ui/src/lib/portfolio-proportion-chart/portfolio-proportion-chart.component.ts

@@ -394,6 +394,9 @@ export class PortfolioProportionChartComponent
               })} ${this.baseCurrency} (${percentage.toFixed(2)}%)`
             ];
           }
+        },
+        title: () => {
+          return '';
         }
       }
     };