When a filter is accessed, it is opened in a tab. You can have multiple filters open at a time. Each accessed filter will have its own tab. In the following example, there are two filter tabs:
You can access a filter by clicking on its tab. The filter tabs can be closed by right-clicking on a tab and selecting Close Tab, clicking the X in the tab, or pressing ALT x on the keyboard. If there are multiple tabs open, you can close all tabs except for the selected tab by right-clicking on the tab and selecting Close Other Tabs. You can also open a filter in another window by right-clicking on the filter's tab and selecting Open in New Window.