Xbox One Rumble Delayed with Emulated Wiimote

[mbc07]

4.0.2 (which is the current stable) came two years ago, you should find the build that broke it. Use bisect to find it faster...

Spoiler: (Show Spoiler)

Currently Dolphin is at 4.0-8131, start in the half of that (4.0-4050 or the closest), if it's broken, repeat the process with the lower half (in that case you would go to 4.0-2025 or the closest), if it works, go to the higher half instead (4.0-6075 or the closest). You'll eventually find the last working build, which is vital to discover what have caused this bug...