Kerbal Space Program

Wheels in 1.10 appear to require more force to register ground contact than in 1.9.1. Resting on the surface is not enough to set Part.GroundContact (https://kerbalspaceprogram.com/api/class_part.html#aa9eeb5535b88befd304c641da3e42b55) to true while ModuleWheelBase's isGrounded field works as expected.

A stock game is probably not be affected as driving and steering is still possible. MechJeb's heading control currently uses GroundContact but could be changed to check isGrounded instead.

I created a crude test craft (BG DLC required) that lifts and drops a set of wheels. Some method to watch the GroundContact value is needed, for example MechJeb (Rover Autopilot -> Waypoints -> Settings -> Rover -> Traction - percentage of wheels with GroundContact) or Kerbal Object Inspector.