This image from Sudan People's Liberation Army/Movement became an interesting example of how width &amp; height (or its removal) can change an image's appearance:
1st version, drawing in the upper left corner
2nd version: without w&amp;h, has a left+right border filled by green circle
3rd version: without w&amp;h, has a left+right border, circle corrected to rectWhile librsvg displays the 1st version good, the 2nd is bad, and the 3rd is fine again – but slightly different to the 1st.
With other renderers, the display of 2nd and 3rd without width &amp; height can be completely different. 
Pentagram exact in the center and exactly rotated, but coordinates rounded to integers, and size estimated.
Coordinates calculated to three decimal fractions would be:  "... 5.562-17.119 5.562,17.119-14.562-10.58h18"
Own work using: https://www.crwflags.com/fotw/Flags/ss.html following exactly the rules (size of pentagram is not specified - therefore estimated)
Sarang