Thank you for the proper details, it helps me a lot.
It appears, that you have some sort of script active, that reloads the current page, if the window gets resized. The search plugin triggers the window resize event upon loading, to make sure every calculation is correct – but that triggers that other script as well, which automatically reloads the page.
However, I still recommend disabling the page reloading script when the window gets resized, as it will always reload the page when for example the mobile keyboard pops open, or if the user flips it's device from vertical to horizontal view.Best,
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