Google drive only shows 20 of 86 files

I recently connected my google drive as external storage to my Nextcloud. When I login to Nextcloud via a browser and look in the google drive folder, it will only display 20 out of 86 files on the page. Has anyone encountered this before and knows why this happens?

Many Thanks.

Are the missing files Google files e.g. tables or Google documents?

These are files that I had added into my Google Drive before I connected it to Nextcloud. none of them are google docs.