Hello demavris,
If you mean the gap between your theme moving its sidebar to the bottom of the page and the “Filters” button getting enabled, then please go to your filters preset settings, find the Responsive width field and set it to 921. Save the settings and reload your shop page to test if the issue got resolved.
Sorry for my english again. Filter looks like this one for a second https://drive.google.com/file/d/14PFShXaj1857EWsiRyPEXQ43aaUSqgQB/view?usp=sharing and then the button will appear.
Demavris,
I have run your page on a slow connection, and I think I now understand what you mean! The “Filters” button functionality is controlled by Javascript, and if the page gets drawn before the Javascript code is ready, it results in this unwanted effect. I think this could be fought with a few lines of extra code. Please contact us if you would like to test a fix (in order to do that you will need to replace 2 files in the annasta Filters plugin folder).