Sourcemaps don't show original files in CRA

I am using CRA with typescript ( latest version ) and somehow sourcemaps started not showing the original files when debugging.I haven't changed sourcemap related config in webpack.

devtool: isEnvProduction
  ? shouldUseSourceMap
    ? 'source-map'
    : false
  : isEnvDevelopment && 'cheap-module-source-map',

And currently, when I am debugging, it is showing this version. enter image description here

How many English words
do you know?
Test your English vocabulary size, and measure
how many words do you know
Online Test
Powered by Examplum