I worked out how to flip it with the scale approach, but the issue came back doh!
That was on Chrome 77 ( Chromium 77.0.3865.90 (64-bit))
However, looks like its fixed now.
Downloaded Chromium 79 (79.0.3923.0 (64-bit)) from here and it works fine with no changes needed from the SVG. So it looks like we just need to wait for Chrome to update its Chromium 
You can replicate this issue by downloading Chromium 77 https://chromium.woolyss.com/f/chrlauncher-win64-stable-ungoogled.zip