Curious W10 Mail bug since 1809 Update

I have 4 different mail accounts (Hotmail, Yahoo, Comcast, & Gmail) that I read in both Outlook 365 & W10 Mail.

Although I usually read new messages in Outlook, I have W10 Mail configured to show a merged Inbox and then the Spam & Deleted Items folders for each account (because they can't be merged) in my Favorites. That way, I can easily use Empty Folder to clean junk & previously read mail with 3 clicks.

Each account calls these folders something different: Yahoo - Bulk Mail & Deleted Items, Comcast - Junk Mail & Deleted Items, Gmail - Spam & Trash, Outlook - Junk & Deleted Items. So, I can easily detect which account's folder I'm in by checking the folder name in the Favorites pane.

But, since the 1809 update, W10 Mail has changed the Comcast, Gmail & Outlook folder names in the Favorites pane to read Junk Mail & Deleted Items -- but didn't change the Yahoo folder names! Yet, when I select any affected folder, it displays the correct folder name in the Message List pane.

Any ideas? Anyone else experience this? "It is a puzzlement!"

I use three of those Accounts on the W10 Mail App.

You can certainly change Gmail folders displayed by going into Gmail by the Webmail way > Settings, and selecting IMAP folders which are synced.

I don't think you can do much about Outlook Mail(Hotmail) and Yahoo Mail.

On mine Yahoo has "Draft" and "Drafts", another Account "Sent" and "Sent Items".
Right clicking on each gives a different list of options. Some are greyed out.
I have just left mine as is for the moment.

You can change Favourites(starred) folders shown bottom left under Accounts, Right Click option in Folders. I only Star the Inbox on each Account.

Since the 1809 update I have Reset the Mail App, setup all Email accounts again, but the reason was problems with notifications and Gmail's over zealous security.

The Mail and Calendar App is updated at least weekly, so there is little chance of pinpointing anything.