Missing file drop events when debugging

Edit: After reboot and updating some drivers the problem is gone, very strange.

What can cause file drop events to stop happening entirely? I’m facing a real mystery here, I have a program (Windows 64-bit compiled with the latest MSVC) that used to receive drop events fine for years, then suddenly it stopped, but only when launching it from the Visual Studio debugger. All the other types of events register normally, but the SDL_DROPFILE and related events are missing when launched from Visual Studio and back when launched normally from Explorer. What could Visual Studio or SDL possibly be doing that would prevent those events from happening? I’m using SDL 2.0.12.