Mouse scrolling while in Transaction Activity Screen

When viewing the transaction activity for Simplify, using the Firefox browser, the speed of my mouse scrolling is very, very slow inside the box. When I grab the position slider button on the right, it goes very fast and far with very little movement of my mouse. When I put my mouse on the left side accounts box and do the two same things, my mouse operates at the proper speed. There is something wrong with YOUR mouse scrolling speed ONLY inside the transaction activity box on that screen. My mouse scrolling speed is OK everywhere else on the Simplify website BUT not inside this transaction activity box on that screen!