I've checked our records and haven't seen any investigations similar to yours, Userjphillips.

Also, I've replicated your concern, and I've seen the expenses showing under costs. You may be experiencing web issues. Let me help you resolve it. We'll have to perform the basic troubleshooting. Let's start by opening the program using an incognito window. It's the best place to spot browser hiccups. Here are the shortcut keys:

• Google Chrome: press Ctrl + Shift + N 
• Mozilla Firefox: press Ctrl + Shift + P
• Safari: press Command + Shift + N

If you're able to see the expenses, you can go back to the main browser, then clear the cache to refresh it. 

Also, you can use a different browser to help us narrow the cause of this behavior.

Let me add the article about projects as a future reference: Set up and create projects in QuickBooks Online.

You can get back to this thread if you need more help. We're just one post away. Take care!