It is almost a week now that I am using Nokia 7 Plus with stable Android Pie, and came through the following issues that needs to be resolved in the coming updates.
1. The UI is half-boiled. When I connect a physical keyboard, and try to find the shortcut keys, some part of the screen isn't visible. There is no scroll bar as well. Fix this.
2. There is no way to connect to a new WiFi network directly from the notification dashboard like Android Oreo. There is no drop-down menu beside the icons to unveil additional options.
3. Battery consumption on Bluetooth devices is very high. Even in standby, the battery life is getting diminished to 3-4 hours. I tried disabling aptX HD, butbit went in vain. (I tried it with other handsets, and even with Nokia 7 Plus Oreo edition. There was no issues. The issues seem just to be with Android Pie)