Working on my own theme and have encountered an issue with tasks.svg

I am encountering an issue with the scaling of svg’s in the bottom. I cant figure out how to have it scale instead of tileing across the bottom. It looks fine when the taskbar is at a certain size but as soon as I change the size it starts to tile again. (I am assuming this is because its not actually scaling)
Here is what it looks like when scaled up:(it should be one even hump not one and a half)

this is my current line for the xml