Safari web inspector stop working after mac update

After 24 May mac update for Big Sur (11.4), the web inspector only shows Console, Sources, and Audit tab. The Console tab doesn’t show any from the app, it’s always empty. Source Tab doesn’t show the app code anymore. Tried to clean up Safari Cache, also have tried Safari Technology Preview, and none of this worked, still the same annoying thing. Anyone here has experienced something like it?

Env:

Ionic:

   Ionic CLI                     : 5.4.16
   Ionic Framework               : @ionic/angular 4.11.13
   @angular-devkit/build-angular : 0.803.29
   @angular-devkit/schematics    : 8.1.3
   @angular/cli                  : 8.1.3
   @ionic/angular-toolkit        : 2.0.0

Cordova:

   Cordova CLI       : 9.0.0 (cordova-lib@9.0.1)
   Cordova Platforms : ios 5.1.1
   Cordova Plugins   : cordova-plugin-ionic-keyboard 2.2.0, cordova-plugin-ionic-webview 4.2.1, (and 21 other plugins)

Utility:

   cordova-res (update available: 0.15.3) : 0.14.0
   native-run (update available: 1.3.0)   : 1.0.0

System:

   Android SDK Tools : 26.1.1 
   ios-sim           : 8.0.2
   NodeJS            : v10.16.3
   npm               : 6.9.0
   OS                : macOS Big Sur
   Xcode             : Xcode 12.5 Build version 12E262

I downgrade macOS to 11.3.1, it works again.

Please, don’t mark this as resolved. The issue remains.