Not a bug, but definitely an opportunity for a UI improvement in IPAM. For now, check out these threads:
Essentially, you can set it to display more than 150; however, this can get ugly the higher you set it. Another workaround (as mentioned in Peter's post) is to separate the subnets into different groups.
Thanks for the advice. Sounds like the group option is the way to go.
Is there an efficient way to drag multiple subnets to a new group container? The only way i can figure out how to do it is to drag each individual subnet into the group. This will take quite a long to time put all 300+ subnets into groups. Is there any way to drag multiple subnets to a group at one time?
If not, I'm going to try to see if can do it in the DB with SQL scripts. Its a real pain to do them individually.