Spaces are removed between two marked words

[Lemmork]

If you mark two words in the backend (ckeditor5) which are divided by a space as e.g. bold and italic the space between these words are removed in frontend.

I first reported this in the neos-ui package (neos/neos-ui#2593) But it turns out, that this behaviour is caused by the compressor.

I tried to upgrade wyrihaximus/html-compress to version 2.0.1. It preserves the spaces, but the caching keys will show in frontend with this version.