Steps to reproduce:

1. Open the attached project
2. Open the GroupTest.texmkr graph asset
3. In the Blackboard, expand one of the groups if needed
4. Reorder the groups
5. Try to collapse the group that was expanded in Step 3

Actual results: The group does not collapse on the first attempt, requiring an additional click

Expected results: The group collapses on the first attempt

Reproducible with versions: 6000.4.0b8, 6000.5.0a6

Can’t test with versions: 6000.0.67f1, 6000.3.7f1 (Graph Toolkit not available as a built-in module)

Tested on (OS): Windows 11, macOS 26.2

Notes:

• The issue is not completely consistent. Having only one group expanded before reordering helps with more consistent reproduction