Renamed a media collection's Display Title, but TNG still shows the old (previous) Display Title

[JMM]

• TNG 15.0.2

Hello, folks,

I am having a heckuva time with my media in TNG 15.0.2, and apologies in advance for all the screenshots ...

I created a new media collection with a Display Title of People:

... and successfully uploaded photos to it:

I then decided to rename the Display Title to Photos of People, and successfully renamed it:

... and it shows up when choosing a collection:

However, on the GetPerson page, it still shows up as the old Photos title instead of the new Photos of People title:

So, as a test, I created a temporary new collection and called it Photos for Testing:

... and when I temporarily added a new test photo to that test collection, it displays Photos for Testing title correctly on the getperson page:

When I go into phpMyAdmin, under tng_medialinks, I see the correct title in the Display column:

I've cleared my (Brave) browser cache, and tried a different browser (Edge) and cleared its cache too, and also purged the entire cache for that domain on Cloudflare.  But I can't seem to get the new title of Photos of People to display on the getperson page .

Anyone have any idea why this is happening, and how I can fix it?  I could just delete that collection & add another collection with a different name, but can't think of another name to use instead.

Thanks in advance & have a great day.

Regards,
John