Flow: files uploaded in publicly shared folder


A specific folder is publicly shared in order to allow some people (not NC users) to upload files in this folder. All permissions are allowed on this folder: read, create, update, delete.

I’d like to assign a collaborative tag to the newly created files in this folder. To do so, I followed what was suggested here.

It’s working fine for files I upload while connected as a NC user but not when I upload using the public link, not connected as a NC user.
Then the files remains untagged after upload.

What can I do to get files uploaded using the public link to be tagged as expected?