Folders displayed as files (in large directories?)

[cbrnr]

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Steps to reproduce

1. Open a folder containing 100+ subfolders
2. The first 100 folders are shown as folders
3. The remaining folders are shown as files

Expected behaviour

All folders should be displayed as folders.

Actual behaviour

Folders beyond the first 100 items in a directory are displayed as files. As a result, they cannot be opened and only show an empty preview. The issue occurs both in the Nextcloud app and in the Files app.

Logs

Here's the relevant part from the log file when I access the folder "2025-09 JLI", which is displayed as a file:

2025-10-01 10:28:26 [INFO] Inside metadata folder Reviews with permissions: RGDNVCK
2025-10-01 10:28:27 [INFO] Request started: PROPFIND https://XXXXXXXXXXXXXX/remote.php/dav/files/YYYYYYYYYYYY/Documents/Reviews
2025-10-01 10:28:27 [INFO] Network response request: https://XXXXXXXXXXXXXX/remote.php/dav/files/YYYYYYYYYYYY/Documents/Reviews, result: success(2085 bytes)
2025-10-01 10:28:27 [SYNC METADATA] Start Sync Metadata for https://XXXXXXXXXXXXXX/remote.php/dav/files/YYYYYYYYYYYY/Documents/Reviews
2025-10-01 10:28:27 [INFO] Request started: PROPFIND https://XXXXXXXXXXXXXX/remote.php/dav/files/YYYYYYYYYYYY/Documents/Reviews
2025-10-01 10:28:27 [INFO] Network response request: https://XXXXXXXXXXXXXX/remote.php/dav/files/YYYYYYYYYYYY/Documents/Reviews, result: success(2085 bytes)
2025-10-01 10:28:33 [INFO] Request started: No request created yet.
2025-10-01 10:28:33 [INFO] Inside metadata folder Reviews with permissions: RGDNVCK
2025-10-01 10:28:33 [SUCCESS] Downloaded file: https://XXXXXXXXXXXXXX/remote.php/dav/files/YYYYYYYYYYYY/Documents/Reviews/2025-09 JLI
2025-10-01 10:28:33 [INFO] Request started: GET https://XXXXXXXXXXXXXX/remote.php/dav/files/YYYYYYYYYYYY/Documents/Reviews/2025-09%20JLI
2025-10-01 10:28:33 [INFO] Inside metadata folder Reviews with permissions: RGDNVCK
2025-10-01 10:28:33 [INFO] Inside metadata folder Reviews with permissions: RGDNVCK
2025-10-01 10:28:33 [SUCCESS] Downloaded file: https://XXXXXXXXXXXXXX/remote.php/dav/files/YYYYYYYYYYYY/Documents/Reviews/2025-09 JLI
2025-10-01 10:28:33 [INFO] Inside metadata folder Reviews with permissions: RGDNVCK
2025-10-01 10:28:39 [INFO] Request started: PROPFIND https://XXXXXXXXXXXXXX/remote.php/dav/files/YYYYYYYYYYYY/Documents/Reviews
2025-10-01 10:28:39 [INFO] Network response request: https://XXXXXXXXXXXXXX/remote.php/dav/files/YYYYYYYYYYYY/Documents/Reviews, result: success(2085 bytes)
2025-10-01 10:28:39 [INFO] Request started: PROPFIND https://XXXXXXXXXXXXXX/remote.php/dav/files/YYYYYYYYYYYY/Documents/Reviews
2025-10-01 10:28:40 [INFO] Network response request: https://XXXXXXXXXXXXXX/remote.php/dav/files/YYYYYYYYYYYY/Documents/Reviews, result: success(212860 bytes)
2025-10-01 10:28:40 [INFO] Inside metadata folder Reviews with permissions: RGDNVCK
2025-10-01 10:28:40 [SYNC METADATA] Start Sync Metadata for https://XXXXXXXXXXXXXX/remote.php/dav/files/YYYYYYYYYYYY/Documents/Reviews
2025-10-01 10:28:40 [INFO] Request started: PROPFIND https://XXXXXXXXXXXXXX/remote.php/dav/files/YYYYYYYYYYYY/Documents/Reviews
2025-10-01 10:28:40 [INFO] Network response request: https://XXXXXXXXXXXXXX/remote.php/dav/files/YYYYYYYYYYYY/Documents/Reviews, result: success(2085 bytes)
2025-10-01 10:28:40 [INFO] Request started: PROPFIND https://XXXXXXXXXXXXXX/remote.php/dav/files/YYYYYYYYYYYY/Documents/Reviews/2020-08%20NIMG%20(Cheveign%C3%A9)
2025-10-01 10:28:40 [INFO] Network response request: https://XXXXXXXXXXXXXX/remote.php/dav/files/YYYYYYYYYYYY/Documents/Reviews/2020-08%20NIMG%20(Cheveign%C3%A9), result: success(8093 bytes)
2025-10-01 10:28:40 [INFO] Request started: PROPFIND https://XXXXXXXXXXXXXX/remote.php/dav/files/YYYYYYYYYYYY/Documents/Reviews/2021-11%20EICS%20PACM
2025-10-01 10:28:40 [INFO] Network response request: https://XXXXXXXXXXXXXX/remote.php/dav/files/YYYYYYYYYYYY/Documents/Reviews/2021-11%20EICS%20PACM, result: success(6045 bytes)
2025-10-01 10:28:40 [INFO] Request started: PROPFIND https://XXXXXXXXXXXXXX/remote.php/dav/files/YYYYYYYYYYYY/Documents/Reviews/2021-05%20JECP
2025-10-01 10:28:40 [INFO] Network response request: https://XXXXXXXXXXXXXX/remote.php/dav/files/YYYYYYYYYYYY/Documents/Reviews/2021-05%20JECP, result: success(6022 bytes)
2025-10-01 10:28:40 [INFO] Request started: PROPFIND https://XXXXXXXXXXXXXX/remote.php/dav/files/YYYYYYYYYYYY/Documents/Reviews/2022-02%20JCP%20(G%C3%B3mez-Vel%C3%A1zquez)
2025-10-01 10:28:40 [INFO] Network response request: https://XXXXXXXXXXXXXX/remote.php/dav/files/YYYYYYYYYYYY/Documents/Reviews/2022-02%20JCP%20(G%C3%B3mez-Vel%C3%A1zquez), result: success(8099 bytes)
2025-10-01 10:28:44 [INFO] Inside metadata folder 2025-09 JLI with permissions: RGDNVCK
2025-10-01 10:28:44 [INFO] Request started: GET https://XXXXXXXXXXXXXX/index.php/core/preview?fileId=262816942&x=1024&y=1024&a=1&mode=cover&forceIcon=0&mimeFallback=0&etag=2d4aa197e7146553ebb11ae49fdbc0ba
2025-10-01 10:28:44 [INFO] Request started: PROPFIND https://XXXXXXXXXXXXXX/remote.php/dav/files/YYYYYYYYYYYY/Documents/Reviews/2025-09%20JLI
2025-10-01 10:28:44 [INFO] Network response request: https://XXXXXXXXXXXXXX/remote.php/dav/files/YYYYYYYYYYYY/Documents/Reviews/2025-09%20JLI, result: success(2099 bytes)
2025-10-01 10:28:44 [INFO] Network response request: https://XXXXXXXXXXXXXX/index.php/core/preview?fileId=262816942&x=1024&y=1024&a=1&mode=cover&forceIcon=0&mimeFallback=0&etag=2d4aa197e7146553ebb11ae49fdbc0ba, result: success(199922 bytes)

Reasoning or why should it be changed/implemented?

This is a bug so it should be fixed. Not sure, but this could be related to #3785.

Environment data

iOS version: iOS 26.0.1

Nextcloud iOS app version: 7.1.6.1

Server operating system:

Web server:

Database:

PHP version:

Nextcloud version: 31.0.7