# Severe Outliner instability **URL:** \ **Category:** Issues and Bug Reporting\ **Tags:** Status-NeedsMoreInfo, fortnite-creative, unreal-editor-for-fortnite, fortnite\ **Created:** [November 9, 2026, 1:00pm UTC](https://forums.unrealengine.com/t/severe-outliner-instability/2852831 "2026-11-09T13:00:18Z")\ **Posts on this page:** 1\ **Showing post:** 5
**Author:** ![Dormikon](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Dormikon](https://forums.unrealengine.com/u/Dormikon)\ **Post date:** [November 9, 2026, 7:30pm UTC](https://forums.unrealengine.com/t/severe-outliner-instability/2852831/5 "2026-11-09T19:30:55Z")
Hi Ryan, The original post is here: : [Duplicate hierachy bugged since update today. - #6 by Dormikon](https://forums.unrealengine.com/t/duplicate-hierachy-bugged-since-update-today/2848323/6) To your question, no, I did not try to undo whatever removed the folders because I did not notice it until the next day. I like to keep a lot of static meshes (thousands) for easier editing, and when I am done I batch them into instanced blueprints. Also I like to work with many nested folder hierarchies to keep things in order. Thus far that was not a problem. I am wondering if my scene got too heavy with about 16 000 individual actors, but my research showed that you can go up to about 60000 actors. ( notwithstanding the fact that each is a draw call and such a map is not suited for final publishing). The best way for me to fix this is to separate the static meshes I arranged for the last 2 days by batching them into a blueprint and migrate that back into the last good version of my map. Here is the zipped log file: [Logs.zip](https://forums.unrealengine.com/uploads/short-url/72Tx9tiBi9iKSKecD10EItScL88.zip) (18.2 MB) The errors in the outliner are numerous, but they all had been fixed before earlier this year when a similar bug happened in the outliner. Most notably is that “duplicate hierarchy” does not work properly. --- _[View the full topic](https://forums.unrealengine.com/t/severe-outliner-instability/2852831)._