Voooorsicht ;)

[mhsdesign]

The esbuild change in the neos ui moved the asset locations around so they will be in a different place in 8.2 (and only the host css now in Build folder is needed)

as opposed to the hardcoded:

Nezaniel.ComponentView/Classes/Application/NeosStuffFactory.php

Line 51 in 8b3a234

<script src="' . $this->uriService->getResourceUri($compiledResourcePackageKey, 'JavaScript/Vendor.js') . '"></script>

see: https://github.com/neos/neos-ui/blob/8.3/Resources/Private/Templates/Backend/Guest.html