Emulator

Game Name?
Not Applicable

Game ID? (right click the game in the game list, properties, info tab)
Not Applicable

MD5 Hash? (right click the game in the game list, properties, info tab, MD5 Hash: Compute)
Not Applicable

What's the problem? Describe what went wrong.

If you create a savestate in "Real Wiimote" mode with a nunchuck attached, that savestate works fine for the current session. If you restart Dolphin or reconnect your Bluetooth adapter then load that same savestate, the control stick no longer responds properly. This appears to be an issue with the neutral position of the stick.

What steps will reproduce the problem?

1. Set Dolphin to use a "Real Wiimote"
2. Connect your Wiimote and Nunchuck
3. Launch a game that uses the nunchuck
4. Create a savestate
5. Restart Dolphin
6. Load that savestate
7. The control stick no longer properly responds (neutral position is wrong)

Is the issue present in the latest development version? For future reference, please also write down the version number of the latest development version.
Yes
5.0-6378

Is the issue present in the latest stable version?

Yes, 5.0 Stable

What are your PC specifications? (CPU, GPU, Operating System, more)
Windows 10, Fall Creator's Update
GTX 1080
i7-6700k

Is there anything else that can help developers narrow down the issue? (e.g. logs, screenshots,
configuration files, savefiles, savestates)

"Nintendo games calibrate the center position of the Analog Stick upon power-up or insertion of the Nunchuk. The mechanism for that is unknown."
https://wiibrew.org/wiki/Wiimote/Extension_Controllers/Nunchuck