I am using basic URL filtering parameters as follows: ?FilterName=Product&FilterMultiValue=*competing product*. This works fine if i am on the all documents view, or using a group by Product(the column that is receiving the filter). But, if i change the view to group by another column then the filter will return the correct files + all the other documents that have the same value that is in the column that is being grouped by.
For example, There are 2 items tagged as Product=HDX-11. Both of those files are also tagged DocType=Proof Sources:Poster. There are also 30 other files that are tagged with DocType=Proof Sources:Poster. When i apply the Query String filter from above i get the correct two files, plus all the other 30 files that are tagged with the same value for the group by field. In the image below you can see it says that it got 3 results, which is correct. But then it shows more than it says it will.