Experimental fix for https://github.com/firefly-iii/firefly-iii/issues/4424

app/Support/Twig/General.php

@@ -50,6 +50,7 @@ class General extends AbstractExtension
             $this->formatFilesize(),
             $this->mimeIcon(),
             $this->markdown(),
+            $this->floatval(),
         ];
     }
 
@@ -297,6 +298,19 @@ class General extends AbstractExtension
         );
     }
 
+    /**
+     * @return TwigFilter
+     */
+    protected function floatval(): TwigFilter
+    {
+        return new TwigFilter(
+            'floatval',
+            static function ($value): float {
+                return (float)$value;
+            }
+        );
+    }
+
     /**
      * Show icon with attachment.
      *