Since patch 4.9.1, many environmental mutators avoid newly set up Mutator Safety Zones instead of using their own set of rules to avoid player's bases. This is something I suggested long time ago.
Affected mutators are: Blizzard,
Going Nuclear, Lava Burst, Orbital
Strike, Purifier Beam,
Temporal Fields, Time Warp and Twister.
Chain of Ascension
Cradle of Death
Dead of Night
Lock and Load
Malwarfare
Miner Evacuation
Mist Opportunities
Oblivion Express
Part and Parcel
Rifts to Korhal
Scythe of Amon
Temple of the Past
The Vermillion Problem
Void Launch
Void Thrashing
