Orange Novel Format tab

Hi there,
I have been using Scrivener for a few months now, and just recently (the last few times) I have opened my project, the “Novel Format” tab is coloured in bright orange. When I click on the “Novel Format” tab which opens all the information about the template, the tab shows an orange circle. I haven’t been able to figure out what this is, but it looks like a warning or notification of some sort, and it never used to do that.
I have had some trouble with my computer corrupting files on Scrivener, so I am cautious about opening files in case they disappear again. Does anyone know what the orange tab means?
Any help would be very much appreciated! Cheers.