Nextcloud (local files) as source for Instagram upload does not work anymore

Has anyone encountered the same problem?

When I want to upload a picture on instagram, I can select Gallery -> Misc an then get a list of different sources, including Nextcloud. This usually opened the local nc folder, but now nothing happens.

I tested it with two devices
Nexus 6p Andoid 7, uses the new path /storage/emulated/…/data/com.nextcloud.client/files, here it doesn’t work.
Samsung Galaxy Tab S2 Android 6, here the old path sdcard/nextcloud/ is used (this was set from an older app version and in the settings shown as unknown) here it still works.

EDIT: This will be resolved in the next app version: