Dash 2.6 Slow Dropdowns

I have the following issue. With Dash 2.0 dropwdowns are still working fast. With Dash 2.6 they are becoming very slow with many elements inside. I already tried Dash Mantine MultiSelect. This is working fast again. But I think the search function is working different here. So you cant search phrases with space inside like ( " apple orange 2022") and the string would be “appleAreNotOrangesInTheYear2022”. Is this a known issue. Can i do something here?