Sometimes when breaking any block while moving using a gear head keyboard, I always stop moving and I can't move until I release the LeftMouse button or finish breaking it with bare hands/tools.
Linked issues
Comments 5
Does this keyboard have a trackpad? Sometimes drivers for keyboards with trackpads (usually on laptops) will disable typing while using the trackpad. This can usually be fixed by installing/removing/updating drivers and/or editing driver settings. Unfortunately this isn't a minecraft bug, so I am putting it as invalid. For further technical support, please visit this website.
LWJGL version?