Request: Please add option to disable pinned apps get "widen" when running

when pinned app running, it will have "underline" light color and get slightly "widen". When widen it will cause the others pinned apps shifted from it's exact beginning position. Happened frequently, when I want to open the last pinned app (on the most right) it now shifted to the left in second row taskbar, what a too far away and slowing down. Nevertheless, I wrote this (maybe) in impulsive without thinking further.. I don't know what the experience if it not widen. Thanks for 7+ Taskbar Tweaker, regards.