This answer was for Dolphin 5.0, Real Wiimote, and USB Sensor bar that hooks up to computer via USB.
My problem was solved by the actual hardware of the sensor bar I have. It kept syncing and the bar and controller lit up. But it was not recognizing the Wiimote cursor on screen, yet on Windows 10 it was, wild. I changed it to position 4 with the right button on the sensor and it then worked. I set it to bottom and then had to really tilt the wiibar to register my Wiimote though. After that I was able to play for over 30 minutes and then saved. It seems in position 1 or 2 I will get yellow text on the emulator that states: "Controller 1 connected" then immiediately below: "Controller 1 disconnnected". Position 3 does nothing and only 4 actually works as I felt the motor go on to. Hope that helps someone.
My problem was solved by the actual hardware of the sensor bar I have. It kept syncing and the bar and controller lit up. But it was not recognizing the Wiimote cursor on screen, yet on Windows 10 it was, wild. I changed it to position 4 with the right button on the sensor and it then worked. I set it to bottom and then had to really tilt the wiibar to register my Wiimote though. After that I was able to play for over 30 minutes and then saved. It seems in position 1 or 2 I will get yellow text on the emulator that states: "Controller 1 connected" then immiediately below: "Controller 1 disconnnected". Position 3 does nothing and only 4 actually works as I felt the motor go on to. Hope that helps someone.