Created theme with Luma as parent. Via ftp uploaded my logo.svg to app/design/frontend/[vendor]/[theme]/web/images. It is working, logo shown instead of Luma default. But it doesn't honor my logo's size that is a bit wider.
Tried to create app/design/frontend/[vendor]/[theme]/layout/default.xml like attached image, no change, still to small.
But if I directly modify Luma's file vendor/magento/theme-frontend-luma/Magento_Theme/layout/default.xml it will show my logo with correct width and height.
What am I missing?