Make flash to work correctly even without redirection

I have the following scenario for using 'flash' object. In controller
I have 'on post' action, that ends with?

---
flash.put("message", "Document contains some errors.");
render("Browse/index.html", folder, form);
---

The flash message shows correctly, but when I click on other link on
such page, the message is displayed once again. There is no such
behaviour, when I use some rediction instead of 'render("Browse/
index.html", folder, form);' . I know that flash is commonly used to
bridge the gap between requests with redirection, but I think it
should work correctly even for such simple case as I have ... or am I
doing something wrong?
#############################
Guillaume Bort:
Well it miss a flash.now() method, like in Rails:
now():
Sets a flash that will not be available to the next action, only to the current.
Can you post a bug report ? I will start to implement it.

Details here:
http://groups.google.com/group/play-framework/browse_thread/thread/ee99d72e6757d75e