Why do sites seem to have scripts working mometarily

[quick-question-please]

I wanted to ask this about something I've been noticing with noscript since I started using it about a year ago. When I visit a page I get a momentary flash where the page seems to load as if all the scripts were being allowed (it looks as if everything was loading the way it would in a browser without noscript) and then the page loads as a NoScript user would expect it to, with just the simple key features and no fancy clutter.

I find this puzzling, does it mean that noscript only "kicks in" moments after the page has loaded or something?

An example of a place to see this is to run a google search, have nothing being allowed. I find the google results page momentarily appaers with the box on the right you migth sometimes get where adverts sometimes get loaded, or if you search for a popular site the site's logo and some information about that site may be loaded, then moments later (blink and you will miss it sort of moments) the page loads in the way a noscript user would expect it to, just the list of links to search results, no box at all on the right. It also happens on loads of other sites when you first visit them that day.

Is there a reason that this occurs, do other noscript users see sites loading in a "normsl" way momentarily and then reloading in a noscript way or is it just me seeing this?

Thanks

[quick-question-please]

Extra note, since I can't edit:

This isn't a new thing, I've noticed it since I started using NoScript, but today I saw a particularly noticable example of this effect decided it was finally time to ask why.

Thanks

[barbaz]

Never seen this. Try go to about:config and set accessibility.blockautorefresh to true ?

[quick-question-please]

What change should blocking "autorefresh" make? Is this supposed to be done with the about:config menus of firefox or within some sort of other special menu for noscript itself?
Thanks

[barbaz]

What change should blocking "autorefresh" make?

No idea. I'm guessing that as the page is loading, it's loading a <noscript> element containing a META refresh tag, and the page it refreshes to is slow enough loading that the "first" page flashes. If I'm correct this will prevent the flashing, instead offering if you want to go to the "second" page.

Is this supposed to be done with the about:config menus of firefox

That.

[quick-question-please]

If you first clear all your browsing history and temp files, then go to https://www.google.co.uk/ and serahc for "bbc news" then that is one of the pages where I see this happen. On the google results page which appears when you do this a box with the bbc news site logo and some text (a sort of summary of what the bbc news site is) flashes momentarily. This happens for me atleast, I don't know if others will see the same quick flash of the box before the page loads in the normal noscript way.
Thanks

[barbaz]

If you first clear all your browsing history and temp files, then go to https://www.google.co.uk/ and serahc for "bbc news" then that is one of the pages where I see this happen.

And there is a meta refresh on that page, and following it gives me a different looking page. Which points to what I'm saying being the case.
Please try go to about:config and set accessibility.blockautorefresh to true .