Selecting multiple filters in a group

I have a project where topic content contains various build tags. I also have various filter criteria where each criteria selection excludes a specific build tag. For example, Database Server excludes the Database_Server tag:

Likewise, Process Server excludes the Process_Server tag:

In my topic, I have various bits of information illustrated here where each line has a corresponding tag:

When I generate this output and allow multiple selections to be made in a group, the content seems to filter correctly when only one filter criteria is checked:

But when I select two checkboxes, the first tag that was filtered out is shown again:

In this case, there are two filters being applied and each should exclude a single tag, but they seem to be cancelling each other out.  When I uncheck the first checkbox, the second filter works properly:

Is this the correct behavior? I want to be able to filter out tagged content when the related checkbox is checked, but it seems like it does not work this way when excluding content. If I did it the other way and had the content only display when the checkbox was checked, it would work, but I need to be able to filter out information for this feature to be useful. I know the filtering logic has other flaws, so is this expected behavior or a defect?

Thanks.