Reproduction steps:
1. Create a new project
2. Install ProBuilder package (Window > Package Management > Package Manager > Unity Registry > ProBuilder)
3. Click the “Create Cube” Tool in the Scene window
4. Click and drag in the Scene window to create a several Cube GameObjects
5. Change the Shape of one of the newly created GameObjects in the Inspector several times
6. Duplicate all ProBuilder GameObject ~30 times
7. Undo all changes
8. Redo all changes

Actual result: Editor crashes
Expected result: Editor doesn’t crash

Reproducible with: 6.0.9 (6000.5.0a5, 6000.5.0b9, 6000.6.0a5)
Not reproducible with: 6.0.9 (6000.0.0f1, 6000.3.16f1, 6000.4.8f1, 6000.5.0a4)

Reproduced on: Windows 11, macOS Tahoe 26.4 (M4), Ubuntu 24.04

Note:

• FAV is in Editor versions
• First few lines of the stack trace:

{code:java}
#0  0x00000103e10640 in JobsUtility_CUSTOM_GetWorkStealingRange(WorkStealingRange&, int, int, int)
#1  0x0000017cdf13d8 in 81d4349bbc49408c1d2f4889f8de4ccd
#2  0x000001038e5994 in ExecuteJob(ManagedJobData, void ()(void, void, void, void, int), int, unsigned char)
#3  0x000001038e6394 in ExecuteJobCopyData(ManagedJobData, void ()(void, void, void, void, int), int)
#4  0x00000104050804 in ujob_execute_job(ujob_control_t, ujob_lane_t, ujob_job_t, ujob_handle_t, unsigned int)
#5  0x00000104050ac8 in lane_guts(ujob_control_t, ujob_lane_t, int, int, ujob_dependency_chain const*) {code}