Please share the element you are using so that we will know which one is causing the problem.
And if you are using the style format float
when building tile/card view, then yes, it is a known issue which display only the first 30 items after page refreshing (reporting posts can be referred in Ganesh Sanap’s comment).
Here is a workaround for the mentioned issue: How to create a Tile view on modern SharePoint lists.
I haven’t found other elements causing the same issue. Please do update in this thread if you are using another one.