All of my devices are affected by this, or something very similar. My server is running Ubuntu 16.06 with Nextcloud 14.0.1 (in a subdirectory). Here’s logs from my

• Nexus 5X (Android 8.0.1 @ Oct 2018 level patches)
• Moto G (2013 model, LineageOS 14.1 / Android 7.1.2)
• Samsung Galaxy Tab 4 (SM-T530, Android 5.0.2. @ Jan 2017 level)

I trimmed them down to (what appears to me as) the essential, filtered out some noise and replaced my username and the server hostname.

Steps to reproduce:

1. (On desktop) Create a new subdirectory under the sync directory, add two JPEG files into it. Wait for changes to sync.
2. (On mobile) Open Nextcloud, select the newly created directory, switch to grid view.