Reproduction steps:
1. Open the attached “repro-project“
2. Open the “Assets/Scenes/NeonTest.unity“ scene
3. Switch the Editor to Debug Mode by clicking the bug icon, located in the lower-right corner of the Unity interface
4. Open the “Assets/Code/ECS/Systems/Nations/UnitTrainingSystem.cs“ script in Rider IDE
5. Add a breakpoint at line 69
6. In Rider IDE select the "Debug" option which is located in the upper-right corner of the Rider interface
7. Back in Unity, enter Play Mode and choose a country from the presented list
8. In the Game View window, select the army base icon (the second icon from the top) located on the left side
9. Deploy the "Infantry" unit on a green tile on the map
10. Wait for the debug point at line 69 to trigger
11. Within Rider IDE, hover over “orders.length“ at line 64 or 66
12. Observe the crash

Reproducible with: 2022.3.6f1, 2023.1.6f1, 2023.2.0b2
Could not test with: 2021.3.29f1 (could not switch to Debug Mode due to multiple errors when downgrading the project)

Reproduced on: Windows 10 Pro

First few lines of the stack traces:
0x00007FFCF3F1CF19 (KERNELBASE) RaiseException
0x00007FFC11C2064C (mono-2.0-bdwgc) [C:\build\output\Unity-Technologies\mono\mono\utils\mono-log-common.c:143] mono_log_write_logfile
0x00007FFC11C0C4A2 (mono-2.0-bdwgc) [C:\build\output\Unity-Technologies\mono\mono\eglib\goutput.c:172] monoeg_g_logv_nofree
0x00007FFC11C0C57C (mono-2.0-bdwgc) [C:\build\output\Unity-Technologies\mono\mono\eglib\goutput.c:215] monoeg_assertion_message
0x00007FFC11C0C5E6 (mono-2.0-bdwgc) [C:\build\output\Unity-Technologies\mono\mono\eglib\goutput.c:239] mono_assertion_message_unreachable