When you google "flutter text selection" the first result is the documentation of the SelectableText. When you are new to Flutter, you think that this is the way to make a text selectable. However, since a few months there is also a way to make multiple text widgets selectable (SelectionArea, see #95226). The documentation of SelectableText doesn't mention in any line of the existence of the SelectionArea widget, see https://api.flutter.dev/flutter/material/SelectableText-class.html)

I think it would be a good idea to also mention SelectionArea, when you want to add a selection for more than only one text widget. Therefore, new Flutter might explore this widget and are going to read documentation of this widget.