I've just installed Spine Trial and run into a bug that is reproduced on my PC this way:
1. Open Spine Trial
2. Wait until it loads
3. Maximize the window (otherwise, it works fine)
4. Click Minimize button (not just switch to another window)
5. Restore Spine window
6. See a gray rectangle instead of Spine
My system is Windows 10 Pro x64.
Windows does not indicate that the app is unresponsive. And there are few percents of CPU used at this state.
The rectangle size is 1166 x 875 pixels which is my current Spine size in not maximized mode.
My screen resolution is 1920 x 1080. 125% interface scale factor set in Windows display settings.
Esoteric Software LLC (C) 2013-2018
Windows 10 Enterprise x86 10.0
Up to date: Spine 3.7.47-beta Trial
Spine 3.7.47-beta Trial
Intel(R) UHD Graphics 630
4.5.0 - Build 18.104.22.16844
OpenAL 1.1, Default audio device