Is PresentationCore built with Debug configuration?

[omariom]

• .NET Core Version: 3.0.0-preview8-28405-07, 3.0.0-preview6-27804-01
• Windows version: 1903
• Does the bug reproduce also in WPF for .NET Framework 4.8?: No
• Is this bug related specifically to tooling in Visual Studio (e.g. XAML Designer, Code editing, etc...)? No

Problem description:

While looking at the jitted code of PresentationCore, found that the code was not optimized.
Turned out the assembly has optimizations explicitly disabled.

[rladuca]

Yep, we discovered this as part of an investigation into #1549. Long story short, we inject a module constructor into PresentationCore via IL(D)Asm and had incorrect settings leading to the wrong parameters being used for the DebuggableAttribute.

This was already fixed recently. Closing as a duplicate.