Yeah I have tried multiple browsers. IE seems to work the best but still crashes/doesn't load. I wonder if there are settings that need enabled in the browser settings for this it work better? The internal site is added as trusted on each browser.
I had the same issue after I turned on HTTPS redirect. Once I turned it back off the issue resolved itself.
Management/HTTP-HTTPS: HTTPS disabled.
Ok, in that case I suggest you upgrade to 188.8.131.52. There were several web interface bugs resolved since 184.108.40.206.
Or even better, 8.3.15x.x TAC Escalation build, which you only get by contacting TAC.
See here for more information: https://www.cisco.com/c/en/us/support/docs/wireless/wireless-lan-controller-software/200046-tac-recommended-aireos.html
I agree, sometimes when you have to make a single change on an access point and you open the list and it doesn't load. Then you press F5 and it does load, then you click the individual AP and it fails to load again so you press F5 again but you're back in the list view, all filters gone...