v2.5.0 breaks rendering on Docker

This is quite an odd issue which I don't understand completely.

We were using `^2.2.0` as a version so we automatically migrated to `2.5.0` and `2.6.0`. Everything was fine when using webpack dev plugin on the localhost.

However, after we pushed the code and built the app through our pipeline the trees completely disappeared from the app. No error in the console, just empty `div`. Puzzling.

The only difference I could find between localhost and cloud environment was that we run node and webpack inside a Docker container. Sure enough after building an image and running it locally the issue appears on localhost too.

I've reverted to `2.3.0` for now which fixed the problem.

Any idea what could cause this issue?