### Description When I use the smuggle tool to drag the paint of pencil, some grapical errors appears.  ### Expected result No graphics error.  ### Actual result Some points remain on the path I dragged them.  ### Steps to reproduce ```bash 1. Click on the Smudge Tool 2. Click one of my pencil draw in vector mode. 3. Drag the selected draws away. ``` ### Video or Image Reference  ### System Information ```bash - Pencil2D version: <0.7.0.939> - Drawing tablet: <None> - Operating System: Windows 10 Version 2009 - CPU Architecture: x86_64 - Qt Version: 5.15.2 - GPU: Intel UHD Graphics 630 ```