I was searching for is:MeshPart in the explorer’s search, selecting unused instances and using Ctrl + X to cut them, then I’d stop the search and paste the parts inside a storage folder. While searching, I collapse the instances that I’ve already checked to skip through them quickly while scrolling. One time when I collapsed one of the instances, the error was logged in the output, and the explorer no longer displayed any of the instance’s parent’s children.
Collapsing workspace then expanding it again will show blank space rather than show its descendants after that error happened, but this bug seems to not affect the other services / storages and they continue to show their descendants normally
Clearing the search fixes the display issue though, workspace shows its descendants as normal afterwards. Searching again also doesn’t cause an issue, though I still need to test more on how often this happens
I also found someone else having the same issue; Next Gen Explorer Beta: Performance and Quality Improvements - #114 by Dpelayo5907
Here’s the stacktrace
14:45:17.372 ExplorerPlugin.ExplorerPlugin.Packages._Index.Explorer.Explorer.Util.ExplorerNodeChildrenMutable:320: Tree descendant count went below 1 - Standalone
14:45:17.373 Stack Begin - Studio
14:45:17.374 Script 'ExplorerPlugin.ExplorerPlugin.Packages._Index.Explorer.Explorer.Util.ExplorerNodeChildrenMutable', Line 320 - function patchNodeDescendantCount - Studio
14:45:17.375 Script 'ExplorerPlugin.ExplorerPlugin.Packages._Index.Explorer.Explorer.Networking.createSession.SessionChildren', Line 14 - function addDescendantCount - Studio
14:45:17.376 Script 'ExplorerPlugin.ExplorerPlugin.Packages._Index.Explorer.Explorer.Networking.createSession.SessionChildren', Line 106 - function replaceChildren - Studio
14:45:17.377 Script 'ExplorerPlugin.ExplorerPlugin.Packages._Index.Explorer.Explorer.Networking.createSession.Expanding', Line 113 - function unexpand - Studio
14:45:17.377 Script 'ExplorerPlugin.ExplorerPlugin.Packages._Index.Explorer.Explorer.Networking.createSession', Line 141 - function unexpand - Studio
14:45:17.388 Script 'ExplorerPlugin.ExplorerPlugin.Packages._Index.Explorer.Explorer.Components.ExplorerNodeRow', Line 96 - Studio
14:45:17.394 Script 'ExplorerPlugin.ExplorerPlugin.Packages._Index.ReactRoblox.ReactRoblox.client.roblox.SingleEventManager', Line 112 - Studio
14:45:17.394 Stack End - Studio
Expected behavior
I expect the explorer to collapse and expand normally while I’m not adding or removing instances during the collapse/expand