Pretty simple one, ranking up Earthbound Fog doesn't seem to actually increase the duration right now.
Tested with EBF at rank 5 (with accel, hence the turns here), cast at round 1, ended at round 6.
As a note, I was first trying it with a higher rank via EM tools, only to see it end after five. Lowered the rank to the normal cap to test again. After a relog, and equipping hexer with rank 5 EBF as a class rather than loading it on, this issue persisted.
Tested with EBF at rank 5 (with accel, hence the turns here), cast at round 1, ended at round 6.
As a note, I was first trying it with a higher rank via EM tools, only to see it end after five. Lowered the rank to the normal cap to test again. After a relog, and equipping hexer with rank 5 EBF as a class rather than loading it on, this issue persisted.