Hello Slartybardfast_iv,
Ensuring Maps and Waze are showing correctly when using CarPlay is important and you've come to a great place for help. Since noticing this issue, have you verified that Maps and Waze work as expected when not using CarPlay? If so, let's begin with restarting your iPhone. While a simple step, it's very beneficial in resolving many issues. You can find the steps for restarting in the following article. If your'e using an iPhone X or later, you can follow the steps listed below.
- "Press and hold either volume button and the side button until the power-off slider appears.
- Drag the slider, then wait 30 seconds for your device to turn off. If your device is frozen or unresponsive, force restart your device.
- To turn your device back on, press and hold the side button (on the right side of your iPhone) until you see the Apple logo."
Restart your iPhone
Let us know how that goes!