Bedrock mu-plugin autolader ignoring wpackagist

bedrock
3

*bump

Nobody? Still haven’t found a way on how to push / deploy mu-plugins properly, they are being ignored on a Trellis deploy if I just place them in the folder and I cannot add them via composer like so:

"extra": {
  "installer-paths": {
    "web/app/mu-plugins/{$name}/": [
      "type:wordpress-muplugin",
      "roots/soil:3.7.3", // --> THIS WORKS
      "wpackagist-plugin/safe-svg:1.6.1", // --> NOT WORKING
      "wpackagist-plugin/otf-regenerate-thumbnails:0.3", // --> NOT WORKING
      "wpackagist-plugin/media-credit:3.2.0", // --> NOT WORKING
    ],
    "web/app/plugins/{$name}/": ["type:wordpress-plugin"],
    "web/app/themes/{$name}/": ["type:wordpress-theme"]
  },
}

UPDATE
I’ve just discovered another thread with regards to this but this is from 2014 and since then the autoloader seems to have landed so I guess it is obsolete…?