I've checked here in our system and haven't found any open investigation about expenses transactions not showing up. To further isolate the issue, I recommend accessing your account in a Private browsing window first to verify if this is caused by the system or your browser.
Here are the keyboard shortcuts that will help you accomplish this in all supported browsers:
Chrome: Ctrl+Shift+N
Internet Explorer: Ctrl+Shift+P
Firefox: Ctrl+Shift+
Safari: Command+Shift+N
Once done, when you're on the Expenses tab, click the Filter drop-down and be sure to set the correct reporting date.