Date.now() returns null in extremely rare occurances

[LovelyA72]

Version used

4.1.0

Describe the bug

Date.now() sometimes return null and crashes the entire software

To Reproduce

repeatedly call Date.now() in a long time span and it might happen. It happened twice on me, one time when debugging in Visual Studio and the other time while running without a debugger attached.

Expected behavior

Date.now() working as expected

Additional context

.NET 8.0 WPF software on Windows 11 Workstation Edition

[Genteure]

Are you calling the same engine from multiple threads by any chance?

[LovelyA72]

It's a WPF app so there's a possibility? What should I do to mitigate this?

[sebastienros]

@LovelyA72 don't declare a static or share and instance of Engine. Or if you do call Execute on a shared instance (because you need to evolve its state) then lock these usages.

[LovelyA72]

I used lock on all those usages, also I (should probably do this earlier) wrapped all the script executions with try catch. Everything seems fine now. Thank you!