on the booster you get from boss battle it says 30 min but when you use it you get 2 hours. can be xp,spawner or shop booster.
Make a bug report to let devs know it is still occuring by clicking the following link. https://www.mineheroes.net/index.php?applicationform/bug-support.6/form. It has been known by devs previously.
There is no reason to change back the times this late in the map, the boosters have already been used and would be unfair to new-comers due to the boosters being shortened.
If this is still happening make a bug report here. https://www.mineheroes.net/index.php?applicationform/bug-support.6/form
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