Bug with width-tool - (line thickness)

After the download of the security update 21.0.6, all variable line widths created with the line tool (N) or Pencil tool seem to be reset. So lines that I previously edited with the width tool (shortcut U) have become basic lines instead of brush-like lines / strokes. I don't know if this only applies to shape tweens. It makes my projects completely useless. I had great relief when I downgraded and saw that the projects had been restored. If I had to manually adjust all of this it would take me weeks. The information about the update is talking about an update for graphics support. I can tell you that this is not the desired effect and I hope that a solution will be found soon. Furthermore, I wonder if others have also encountered this problem. In any case, this is an upgrade that I am not going to make.