Yes, it does, especially if the cap isn't secure enough to keep out air as the lighter and more fluid chemical elements in this anaerobic sealant can evaporate over time. Often, one can tell if it's bad or going bad as the fluid congeals/thickens when compared to a new bottle/tube. In your case, it seems to have gone bad even though the consistency is the same. Excess heat or cold can do it in as well.
