Does this bug fix only affect people that haven't yet encountered Sirus yet (so pre-20 watchstones) or also people who are trying to spawn their influence by running one map past 20 watchstones?
The example /u/Hartlin_GGG mentions above is only referring to pre-20 watchstones Atlas, but the wording in the patch notes could mean it affects both states?
The 33% roll to spawn in a map they had already spawned in applied to both pre- and post-Sirus spawning. With post-Sirus spawning the roll compounded with the base chance for an encounter to spawn.
The original patch note was ambiguous about it applying to post-Sirus conqueror encounters, so I can see how people wouldn't have known it was intentional.