[BUG] Unable to hide certain columns

[josberkers]

Describe the bug
I've added the columns "url" & "scheduled", but I'm not able to hide them.

To Reproduce
Steps to reproduce the behavior:

1. Go to 'Settings'
2. Click on 'Tables.'
3. Move Column "url" to hidden
4. Save
5. No change
6. Url is displayed both as Visible as Hidden

Context
Docker on Synology