Another possible bug is that the UI reports 1.56 core-hours used, but my single-core instance has only been running 24 minutes.
The 1.56 core-hours is mostly from inst_KGN6tZdFgoeL2C9KPKBsNA which has four physical cpus and has been running for almost an hour at this point.
Thanks so much for trying this out!!!
If `cat /proc/cpuinfo` or `top` only shows one CPU, I wouldn't expect to be charged for 4 of them.
(Note, the number of cpus might be higher than the number of physical cpus if the host cpu supports hyperthreading.)