UUM-144568

Fixed in 6000.6.0b3

Mentioned in 3 release notes.

First fixed in 6000.6.0b3 (Jul 8, 2026); relisted in 2 later releases.

Open on Unity Issue Tracker
VersionSectionRiskImpactNote
6000.7.0a4Fixes
UI Toolkit
FixFixed an issue where adding a TwoPaneSplitView would not automatically create two children when added through the UI Library.
6000.7.0a3Fixes
UI Toolkit
FixFixed an issue where adding a TwoPaneSplitView would not automatically create two children when added through the UI Library.
6000.6.0b3Fixes
UI Toolkit
FixFixed an issue where adding a TwoPaneSplitView would not automatically create two children when added through the UI Library. (UUM-144568) First seen in 6000.6.0a7.

Pick your Unity version

Unity Releases compares releases against the version your project is on. Picking it now keeps Compare versions focused on what changes between where you are and where you might be going.