You can test this with my repo in the latest version. I am running
npm run server which runs a paranoid hugo server script (in bin/hugo-dev-server.sh). Then I am changing something in
static/images/bg.svg and save and the server sees the changes, reloads, but the resulting page is white. This weirdly happens only if I change anything that is in SVG format. I remember seeing it when I did changes on my favicon earlier this month. Changing a markdown file or a layout file will update properly. Restarting the server will apply the changes.
Is this just me and my weird computer or is one of the “special” server run settings too restrictive for Hugo?