I wish I had your version of QB because obviously your online version has options we the public do not.

As you can see, there is no option to add Line Item Description as a column in the Transaction with Splits report:

And I don't see "switch to classic view" any longer - I used to.

As I stated I know how to work filters.  I'm sure I've been using QB longer than you.  However, your developers fail to do any usability testing when they create these new improved upgrades.  If they did, they wouldn't remove options that are used in the desktop version.  Stop treating your users like we have no knowledge of the product or how to do our jobs. When you have multiple users asking about the same issue stop insisting and repeating the same solutions that don't work and don't actually answer the issue.

Filters are not working.  If they did, I wouldn't be posting the issue.  I have repeated using your steps (which coincidently are the same ones I've used time and time again to create reports in QB) and the reports still show classes that I have not checked.  When I save the report and go back to look at the filters everything is checked and I need to uncheck the ones I don't want and even then it still shows all the classes on the report.  Obviously this is a bug of some sort but you won't even bother to think there is actually an issue.  Even though multiple people continue to report it.

Stop treating your paid customers like they don't have a clue.