Plese download the attached project and run it.
It uses some of our internal data so plese keep it private.

Once you get the GridView with the data do the following:
1. Click on "Mahine speed" Header to change sort order.
2. Open "Mahine speed" filter and deselect all and select 1
3. Open "Mahine speed" filter and deselect 1 and select 2
4. Open "Mahine speed" filter and deselect 2 and select 3
5. Open "Mahine speed" filter and deselect 3 and select 1

At this point you get the crash.

The above steps are for you to be able to reproduce the issue,, in general terms, the issue happens if I reproduce the same steps in any Combobox column.

This is causing crashes all along my project since most of the forms in my project are gridviews and users use a lot sorting and filtering to get to the needed data.