Pattern fill not scaled correctly

When attempting to convert the SVG below to a PNG image in python the background grid created by filling a rectangle with a defined pattern is not being scaled correctly.
```

```
It should be rendered as shown in the image below.


Note are that all the vertical bars, except the violet and dark orange ones, line up with the grid lines as expected and the major and minor graduations are aligned):

The function I'm using to convert the contents of the SVG file to a image is shown below:
```
def render_svg(_svg):
_bytes = cairosvg.svg2png(_svg)
byte_io = io.BytesIO(_bytes)
return pygame.image.load(byte_io)
```

This results in the following image:


This shows that that the grid pattern does not align with the vertical bars in the bar chart as expected, and the major and the major and minor graduations are also misaligned.

I'm using Debian Buster with python3.7 (3.7.3-2+deb10u2), python3-pygame (1.9.4.post1+dfsg-3), and (python3-cairosvg 1.0.20-1) installed using apt-get.

Drawing the grid lines one line at a time works as expected.

Hope this is helpful!

Thank you.

Start with the render_svg function and reproduce the supplied SVG through cairosvg.svg2png, comparing its PNG output with the reference image. Trace the pattern-fill rendering path and verify the grid graduations align with the vertical bars; done means the generated image matches the expected alignment.

Written by the indexing model from the issue text.