Bug: dev stores increment app proxy urls - WHY?

Hey guys,

Recently, I noticed the issue with app proxy config in our dev stores, for some reason sometimes the url is updated to some weird increment:

for example in this store its /proxy-1 where it has to be /proxy

Obviously, this breaks the app extension and they stop working everytime this incremental update is happening.

What is most concerning is that before I could actually fix it by setting the right url in the settings. But today I always get this error: