Do one thing, You can Import the same dataset in your new power BI insatnce and you can copy the visuals from existing pbix file to new file. Then you can use that new filter pane.
Note:- You can copy the charts or nay visuals across the pbix files unless you have same dataset imported. You can't copy the measure or calculated column. You need to to create those If you are using those in any of the chart.
If you don't want this feature for your current pbix file then Go to File->Optipns->Current File UnderFiltering experience, uncheck the first check box (Enable the updated folder pane, and show filter in the visual header for this report)