Mac: normal-window and fullscreen-window each on its own screen does not work

[SDLBugzilla]

This bug report was migrated from our old Bugzilla tracker.

These attachments are available in the static archive:

• Test-case for two windows as described. (test_Windows.cpp, text/x-c++src, 2017-04-04 17:49:09 +0000, 2576 bytes)

Reported in version: 2.0.5
Reported for operating system, platform: Mac OS X (All), x86_64

Comments on the original bug report:

On 2017-04-03 07:39:51 +0000, wrote:

I use macOS 10.12 with two screens. Now I want to create two windows with SDL2.0.5. One window (400x400pixel) on the one screen/monitor and the other window as a fullscreen-window on the second screen/monitor. This works well so far, but if I click/focus on the first window(400x400), the second window/screen fades to black and stays black as long the application is running. (I observed a similar behavior on Ubuntu 16.10)

On 2017-04-03 20:35:36 +0000, Sam Lantinga wrote:

Can you put together and attach a small test case that we can use to reproduce this?

Thanks!

On 2017-04-04 17:49:09 +0000, wrote:

Created attachment 2711
Test-case for two windows as described.

I've just attached a file!

[slouken]

We are scoping work for the SDL 3.2.0 release, so please let us know if this is a showstopper for you.