Default WP Gallery not Displaying Properly

I’m using the latest version of WP. Latest version of the Oshine Theme (https://themeforest.net/item/oshine-creative-multipurpose-wordpress-theme/9545812) and I have the WP/LR Sync plugin installed as well. I was hoping the Meow Gallery plugin would add a nice masonry layout to be applied to the default WP gallery, but instead it’s breaking the layout badly. Any help would be appreciated. My guess is it’s a theme conflict, so not sure how easy it will be to fix. Though this theme is actually confirmed as working with the WP/LR Sync plugin by the same developer, so I’m hoping this is fixable.

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