We have FAQ's and KB articles that advocate that when a user clicks an excel spreadsheet it opens in read only mode, so don't worry because unless you choose to edit it you can't do any harm.
Changing a behaviour as fundamental as Read only to Edit is quite a surprise.
I get it, "agile", teams is "the project that never ends", 60 features landed in 2019, 7 rolling out, 33 in dev, 23,000 + requests in the roadmap, I get that it's going to change.
But surely there should be a retention of the existing configuration or status quo, add the option to make "edit" the default, but for those of use already rolling out the product, don't change the defaults.
This isn't Facebook, this is a product used in corporate workplaces, where service desks have training schedules and users need to trust a tool to do a job.
Changing it overnight, to "tweak" things like the tab names and the default edit behaviour really makes me wonder if the dev team is a generation too young to understand where their product is being used.
My pilot user experience is fast becoming redundant, because it's a different product already