Tab content begins loading half-way down the screen (massive gap)

I’ve been using the ‘tab section’ in order to display different sections of my portfolio and am consistently having the same issue (on different pages)- tab 1 loads fine but then the next tabs start loading content half-way down the screen. I cannot find any options for why this would be happening.

Tab one contains a Special Heading- Text Block- Masonry Gallery and displays one after the other.
Tab two contains a Special Heading- Text Block- Masonry Gallery with the exact same settings but there is a massive gap between the bottom of the tab to when the content starts.

On a different page it loads the content for Tab 3 correctly but not 1 or 2 and has the exact same issue with content loading way too far down the screen