[claykin]

I had my car updated 2 weeks ago. Mine works OK. Have you tried toggling off/on gesture control?

If that doesn't work you can reboot iDrive but I doubt it will help much since it reboots on start after car is off for 20+ minutes. Hold down mute button for 20 seconds to reboot.

Tell us what firmware version is on your iDrive.

Use iDrive controller:
Click Map
Options
Navigation settings
Position and software version
Software version

Near bottom you'll see NBTevo_X (where X is the firmware version). Mine has S.