Canvas List View Not Saving

Canvas List View Not Saving

Hi, 

I am trying to edit a list view to look different depending on the tags. Everything worked well and saved well with multiple views, but when I have gone back in to make some small changes like moving one of the icons it comes up with the error message "There seems to be fields that are yet to be associated, please associate them before proceeding with save option".

This happens even following the troubleshooting steps I have taken so far such as deleting all changes and rules in the view that I made, not changing anything at all when I open it, disabling and reenabling the rules alongside all the usual closing, reopening, restarting etc. 

It is worth mentioning that I have not in any way changed anything except the design and front end, and have not been into the module or anything else to unlink anything at all.