I would like to add.
I have tried Chrome Workspaces on Canary and I was very disapointed. It has a lot of bugs and needs pointless configurations.
I prefer using Tincr with all the above bugs.
Feature proposal :
It will be great to control the file types are refreshed/changed. For example If you want only to save css changes and leave the other types (html,js) unaffected.In the current version you need to disable the files manually one by one and if a page has many resources this takes time.