[SOLVED]Layout don't work fine with gantry

Hello to all. Sorry, missing for some time.. I'll be back with an issue of JEM. In this case it is a problem of layout. JEM does not seem to follow the css. The entry events screen appears full without tab. Also, instead of opening the popup for enter/select the venue, open a new tab where, of course, controls can't work. I am attaching screenshots to better understand.
PS: I use the Gantry framework, though this may be a useful clue.
Any idea?

Uh! Because someone will ask, the JEM is the latest version of the provision. I already tried to uninstall the component, module and plugin and reinstalled everything.

Hi pajaura,

it seems your browser has JavaScript disabled?

No, it's not..

hi, did you try with the official templates e.g. beez? when there is the problem too then we can try to help. If there is no problem, then it's the problem of your special template.

@pajaura

did install the Gantry Bundle but can't replicate the problem you're having.

I do see Gantry is using the Bootstrap template but well that will definately cause some style-problems too but that's not the probolem you're showing.

Did you try it in another browser to see if it makes a difference or like jojo said did you try the default template of Joomla.