'Angular app will not update web page after edit

Running "ng serve" in WSL2 window (Ubuntu) on Win10 host. Opened localhost:4200 in browser. Edited app.component.html and saved. Page in browser is SUPPOSED to update, but doesn't. In fact, I can't even force it to refresh to new content, old content seems to be cached somewhere. Anybody have a suggestion? BTW, (mis)behaves identically with Chrome or Microsoft Edge browsers.



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