Hi @FabianHanggi sorry for the delay, this seems to be an issue with the browserslist. No clue why React uses those default params. I used the following settings and it built and ran on my machine:
"browserslist": {
"production": [
"last 1 chrome version",
"last 1 firefox version",
"last 2 safari major versions",
"last 2 edge major versions",
"last 2 iOS major versions",
"Firefox ESR"
],
"development": [
"last 1 chrome version",
"last 1 firefox version",
"last 2 safari major versions",
"last 2 edge major versions",
"last 2 iOS major versions",
"Firefox ESR" ]
}