I also have a similar problem with reloading messing up the layout. It's been that way since I started using SUF which was v3.4.4 for WoW 4.3. Entering config mode and back out fixes it. The new version didn't help.
The left is normal, the right is after a reload (not in combat). The frames start at the bottom and grow up.
Also: When people enter the group, the last one is never shown. For instance, when in a battleground and the 10th player joins, there will only be 9 frames for the whole time. The problem there is probably something to do with the fact that when GROUP_ROSTER_UPDATE occurs, the unit IDs are valid, but the information for them might not be available for a few seconds, like name, class, etc. Tidy Plates has a similar problem which I fixed by using an OnUpdate with a 2 second timer, which continues until the info is available for all the units.
And another: Since patch 5.1, the report player away function on the drop down menu doesn't work, and gives an addon blocked error and popup to disable SUF. Why Blizzard would protect that is beyond me.
Report issue is Blizzards fault not mine, nothing can be done about that.
Any issues like an unit not showing are pretty much Blizzards fault a well, as they control all of that. The only thing you could really do to confirm it otherwise, would be to check and make sure there isn't actually a 10th frame (by manually checking for its existence via name).
I'll poke through the issue some more, I expect this is a bit of Blizzards issue and not a whole lot I can do about it, but will see.
Use a /dismisspet macro or drag your dismiss spell from your spellbook to your actionbars.
That's a workaround not a direct solution but one doesn't exist.
You tried to dismiss the pet by using the dropdown on its unit frame btw according to your error log.
Tainted dropdowns are a long-standing issue with its roots at Blizzard code and not likely to get fixed.
Off-topic: You seem to have a lot of leftover junk in your addons folder :)
Ace2 is there a reason to have that installed? Portfolio but no FluidFrames, is there another addon you have installed that uses it?
As a general maintenance task it would be good to pare down your addon list to stuff you actually use / are current.
Just wondering if it would be possible to have the raid frames use the main tank units as assigned by the "Role" tank instead of the "main tank" feature. I've found that almost no one assigns a main tank anymore and the role "tank" would be better to pull up for that frame.
Thank you so much for making this add-on. I love it and suggest it to anyone looking to modify their unit frames.
I was wondering if it is possible to copy the properties of an aura filter list to a new one? e.g. I'd like for the my focus to have the same debuffs filtered as my target filter blacklist has, but I'd like to add additional buffs to filter for my focus as well. But right now it seems that I can only re-add all of those debuffs manually to my new focus filter, which is something like 60 auras. Is there to way to duplicate a current aura filter list to a new one?
Also, is it possible/would it be possible to see in the future the auras that are listed in a filter list appear in alphabetical order? Currently it is very difficult to locate/check to see if an aura is on the list, as the order they appear in is simply the order that you added them to the list in.