I am posting here because this was the top hit for “unreal materials color not updating in editor”. Its kind of a simple solution but for any other noobs who find their way here, it might help. I was trying to create a material, however I couldn’t get it to update in the Content Browser, even though my Constant3Vector was set correctly. It ended up being that I had forgotten to save the material itself (not the general project save). Saving the material forced an update to the project file. I know this seems super simple but I didn’t notice it at first so hopefully this is helpful for someone else.
