For a few versions now I have noticed that alerts no longer show up on this page. I can see log entries that confirm IDS/IPS is working, just nothing in the Alerts tab. The issue was with the "ALL" selection which gives a value of -1.
configctl ids query alerts -1 0 '' '' shows nothing.
configctl ids query alerts 50 0 '' '' shows 50 entries.
I changed the GUI from all to 50 and it works now..
Now that I am walking back through this.. ALL is not an option anymore. It starts at 50.
I may be going mad.. stale browser cache?