After update to Yunohost 2.4, nginx problem of cache?

Hi everyone,

Since the update I have a weird problem.

When I arrive on the login page I have the old interface, if I make F5 I get the new interface.

I tested with several browsers on both PC by clearing the history, cache and cookies or by pressing Ctrl + Shift + R or F5 and the problem remains the same.

And since the update when I click on roundcube app I get a blank page with firefox and HTTP 500 error with IE and chrome with the URL https://xxx/webmail/
If I hit F5 page loads correctly this time.

I also reboot the server.

Any Ideas?

yunohost: 2.4.1
yunohost-admin: 2.4.1
ssowat: 2.6.0

Thanks a lot