**Describe the bug** Using the dragClass to apply a custom backgroud color on dragging list element, but has no effect. **To Reproduce** Steps to reproduce the behavior: 1. Use the react **List** component from [MUI lib](https://mui.com/material-ui/react-list/) 2. Add the ReactSortable component from react-sortablejs and map iterate with list items 3. Add **dragClass** for custom color **Expected behavior** The custom color should be applied as background color to the dragged element. **Information** react-sortable = ^6.1.4 react = ^18.3.1 **Additional context** Some code ```javascript return ( <List component="nav" aria-labelledby="institutes" subheader={ <ListSubheader component="h1" id="institutes"> "selectSource" </ListSubheader> }> <ReactSortable list={sources} setList={setSources} dragClass="dragging"> {sources.map(({ id, name }) => ( <ListItemButton key={id} sx={{ cursor: "grab", }}> <ListItemIcon> <DragIndicatorIcon /> </ListItemIcon> <ListItemText primary={name} /> </ListItemButton> )} </ReactSortable> </List> ); ``` ```css .dragging{ background-color: #21ce21; color: #fff; } ```
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