After refreshing page, page is empty

I have noticed that phenomenon on mobile view or even when it’s on a desktop browser but thin view, (as if mobile),
after I refresh the page, the loaded screen is loaded empty, only the background is loaded.
Then after re sizing the screen, dragging it a bit, the page is rendered as expected. As if it was waiting for re sizing to render the page correctly.
Does anyone here know about this penomenon, or how to solve it?

Which UI toolkit for mobile are you using? Also, see if there are any errors/warning in your browser’s javascript console. I would also inspect the DOM and see what exactly happens - is the main container hidden with CSS, or maybe it’s not even there?

I’m using bootstrap, if that what you meant.
The only exception I get, (for weeks) each time the page loads, and have no idea what it is and if it’s related, is:
TypeError: callbacks[i].call is not a function
at template.js:116
at Function.Template._withTemplateInstanceFunc (template.js:457)
at fireCallbacks (template.js:112)
at null. (template.js:205)
at view.js:107
at Object.Blaze._withCurrentView (view.js:538)
at view.js:106
at Object.Tracker._runFlush (tracker.js:497)
at onGlobalMessage (setimmediate.js:102)
I will try to debug and get back thanks.

Maybe you forgot to use autorun in the onCreated?
Or forgot to put a part of the code inside the autorun, which makes only parts of the code run.