It is a common practice to pin one tile, and then change some of the parameters to change the output, and then pin that chart. This way you get two charts for the price of one in your dashboards. This is especially usefull when trying to manage several dashboards from one report, or trying to limit the number of PBIX files and tabs that you have to maintain. However this doesn not work with a pinned live page as the report filter does not carry through to the pinned tile. All live tiles are pinned as-is and applied filteres are not carried through.
This means that you have to make multiple copies of the PBIX file and save them individually in order to take advantage of the live pinned tile. This is greatly increases the amount of tedious management of reports and dashboards. An improvement would be to retain filters in pinned live tiles.