Mikrotik hotspot must click twice to login

Hello everybody!
I have a running hotspot system on x86 v.3.30. Recently I noticed that when the login page loads and I write my username and password , first time I click login button, nothing happens. I must click the login button twice to login! It is a problem for users because first time when click button , the time is started (users are logged in), but nothing happens in iexplorer. When I click twice - redirection to new web page complete. Can somebody help me to fix this problem ? Thank you in advance!

Upgrade. There was a bug in the Hotspot code.

Upgrade to 4.x ?

exactly

this happens to me exactly!

I am running v6.48.1 stable on CCR1009 but HS user need to click login twice before they could login. Upon first click the invalid username/pass error shows up, but second click on login button then it works. There is no issue though when user click on trial button for the first time..

The exact scenario was reported here http://forum.mikrotik.com/t/invalid-password-for-most-users-on-hotspot-login/91492/1 but no responses was made to help.

Write to support****@mikrotik.com