Hi Rene,
Greetings
from the Syncfusion support.
We Checked your query and we would like to inform , you can
to
change the operator 'StartsWith' to 'Contains' for the column chooser in grids.
Please see the UG documentation below link , In that documentation we
given StartsWith please change into Contains. Kindly refer the below link for
your reference.
Reference:https://blazor.syncfusion.com/documentation/datagrid/column-chooser#customize-the-content-of-column-chooser
Please get back to us if you need further assistance on
this.
Regards,
Naveen Palanivel