I have been running into the same error when attempting to find a gearing strategy for Mistweaver Monk. It worked just fine for tank and dps specs, so I’m suspecting that it may be a common issue for healing classes. I could be off-base, but I would like to know if there is a solution to this issue. Client version 1081, max performance mode.
Same issue here. Client version 1081, normal mode, made sure to not even touch the character during the start, duration and end of the process.
I left all settings the same except for Raidhealing instead of Mythic or similar options as well as removing buff potion and augment rune.
Whoops… it should connect right away, looks like I had an error. Let me do another update in a few minutes here to version 1083 that should resolve it.
I was able to reproduce the issue – this one might take a little bit to fix… kind of a subtle/complex issue going on with ally targeting and raid damage. The next simulator client update will resolve it.