This example is from Wikipedia and will be reused beneath a CC BY-SA license. The reason for the hearth was firm to generally be accidental, as opposed to nonetheless smoldering leftover debris from just five days prior. From Wikipedia

If a difficulty or unpleasant problem smolders, it carries on to exist and will become even worse at any time:

Bug Deal with: No longer grants vision of stealthed models though any smolder missiles are in-flight and a minimum of just one has strike them.