Seems html is broken but through source code it’s not easy to find where it’s broken, so I suggest edit related templates of collections and check the scopes of the elements.
Alternatively you can install a fresh copy of theme and use it.
Please goto Online Store → Themes → Edit code → select sections folder → click on collection.liquid file.
When the file opens on the top beside the filename you will get a link “older versions”. When you click that link it will open a dropdown where you can select older code that might work for you. Hope this works.
@dmwwebartisan it says that the source of the code is the “Search and filer app” on the store.
I will write app support to fix this issue, can you please tell when to to say to them as i don’t know the coding language and i can’t telll them exactly what the problem is.