Relative publicPath

[GrishinAV]

In Quasar 2.16 publicPath by default with vueRouterMode: 'hash' was relative (resource files in index.html were created with no / at the beginning). Now after upgrading Webpack and Quasar to 2.18 I can't set the relative path. PublicPath values: "./", "", undefined result in publicPath equal to "/".
We deploy many instances of our SPA application on relative paths with vueRouterMode: hash , but with different configs. And it makes no sense for us to build each instance with a different public path. After the update, we were forced to roll back. I think a similar problem may arise not only with us.
What is the explanation for the change in publicPath behavior? Is there any way to set a relative publicPath?
The setting does not work according to the documentation https://cli.vuejs.org/config/#publicpath