I was modifying some materials around the mannequin in a 3rd-person map with and editing the default colors of some of the material layers, the engine automatically recompiles shaders, but it queued a lot of them once, over 600 and then the counter began going into negative and disappeared after -30. But now, all shader recompilation basically starts from 0 and counts into negative, reaching a -100 and then dissapearing.