tooltip not styleable independently of drawer

It used to be possible to styles tooltip with css variables set in the theme file.
Recently it stopped working.

Step to reproduce:

• create a theme in VD
• add the following variables:

    --paper-tooltip: {
      color:#fff;
      background-color:#008d61;
    };
    
    --paper-tooltip-background:#008d61;
    --paper-tooltip-text-color:#fff;

expected result: tooltip background color should be green

actual result: tooltip background is the same as the left icon menu

bonus: in theme, change --nuxeo-drawer-background, reload, the tooltip have the new drawer background color