mission to enter the atmosphere of jool doesn't complete when altitude over Jool < 200,000m
Jool atmosphere altitude is reported at 200,000m yet a mission to enter the atmosphere does not complete when your ship dives in below this amount. Confirmed that warp is forced to x4 maximum. Only after I reduced Ap to about 11,000,000m did it work. It may be possible that the first dive after exiting Lythe SOI is not counted or the Ap has to be below a certain level.
I found a report at https://forum.kerbalspaceprogram.com/index.php?/topic/143497-mission-to-jool/ but did not find one in the bug reporting database.