I've seen this issue on Github but even though it was posted 3 weeks ago it doesn't seem to catch anyone else's attention
KSP: 1.4.3 Windows 64bit
Problem: Jool atmosphere cuts out at ~300km
Mods installed:
Scatterer 0.0331b
Hyperedit
Reproduction steps:
Send a ship to Jool, whenever the altitude goes below about 300km the atmosphere cuts out completely. I used Hyperedit at first but i've tried going to Jool the regular way too. In both cases the atmosphere consistently cuts out at low altitude.
Log:
https://drive.google.com/file/d/1bbhINci1GkpaAKehcTH0F4eov4hK3JkG/view?usp=sharing