Can't interact with the flamegraph since the egui 0.20 upgrade

[emilk]

Can click on anything in it, can't zoom, etc.

I think this is related to emilk/egui#2244

A quick test with:

--- a/puffin_egui/examples/eframe.rs
+++ b/puffin_egui/examples/eframe.rs
@@ -7,7 +7,13 @@ fn main() {
     eframe::run_native(
         "puffin egui eframe",
         native_options,
-        Box::new(|_cc| Box::new(ExampleApp::default())),
+        Box::new(|cc| {
+            let mut style = (*cc.egui_ctx.style()).clone();
+            style.debug.show_blocking_widget = true;
+            cc.egui_ctx.set_style(style);
+
+            Box::new(ExampleApp::default())
+        }),
     );
 }

Shows that there are two interactive regions overlapping each other. I'm investigating…