Steps to reproduce:
1. Create new Unity project
2. Open Project Settings window
3. Select Editor section
4. In Editor > Asset Serialization change Mode to Force Binary
5. Observe the Console window 

Actual results: Warnings and errors are thrown in the Console after switching Mode
Expected results: No warnings and errors are thrown in the Console after switching Mode

Reproducible with versions: 6000.3.0a3, 6000.3.1f1, 6000.4.0f1, 6000.5.0a9

Not reproducible with versions: 6000.0.7f1, 6000.2.15f1

Can’t test with versions: 6000.3.0a1, 6000.3.0a2 (Can’t switch serialization mode to binary because compile errors are present in the Console after creating project)

Tested on (OS): Linux 24.04 (reproducible), macOS Silicon Tahoe 26.3.1 (M1) (not reproducible)

Notes:

•  TLS Allocator ALLOC_TEMP_TLS, underlying allocator ALLOC_TEMP_MAIN has unfreed allocations, size 2600

UnityEditor.GenericMenu:CatchMenu (object,string[],int)

• Internal: Stack allocator ALLOC_TEMP_MAIN has unfreed allocations, size 2600