scaleX issues

Previously I was creating MovieClips containing all the frames / animations for my character and just manipulating that for the display. However this becomes unefficient especially when I’ll have hundreds of items. It would be extremely time-consuming to manually create all those movieclips. So instead I decided to make an Animation class that works with a Sprite sheet and just manipulates the scrollRect property.

But I’m having an issue with the scaleX, previously when I edited scaleX to -1/1 it would work fine. But now when I’m doing it it’s acting like a literal y-axis flip. Previously with my old method it didn’t do this, it just reversed it keeping the x,y the same. Anyone have any idea for a fix?