app/Filament/Resources/ProductCharacteristicsMasterResource.php

@@ -347,8 +347,7 @@ class ProductCharacteristicsMasterResource extends Resource
                     ->label('Created At')
                     ->alignCenter()
                     ->dateTime()
-                    ->sortable()
-                    ->toggleable(isToggledHiddenByDefault: true),
+                    ->sortable(),
                 Tables\Columns\TextColumn::make('created_by')
                     ->label('Created By')
                     ->alignCenter()