The documentation says we need to enable backwardsCompatibility to use toolbarTextStyle and titleTextStyle, but I can only use them when I disable it.

I've made a repo with a piece of code to try the functionality: https://github.com/Charly6596/Title-text-style-issue

Screenshots

The fact that the documentation says that toolbarTextStyle is obsolete also confuses me.

By reading #71184 (comment) I assume that the documentation should be fixed and the behaviour is correct.

Also, the AppBar documentation isn't updated regarding to the backwardsCompatibility flag.

The current behaviour can be observed in the implementation:

The fact that #81675 (comment) mentions that the value should be true to use titleTextStyle confused me, commenting it just so others can be redirected here if they had the same problem as the OP