diff -r 4116bf232fe7 src/video/SDL_video.c
--- a/src/video/SDL_video.c	Thu May 23 14:19:00 2019 -0700
+++ b/src/video/SDL_video.c	Fri May 24 17:04:28 2019 +0200
@@ -1654,6 +1657,12 @@
         } else {
             SDL_GL_UnloadLibrary();
         }
+    } else if (window->flags & SDL_WINDOW_OPENGL) {
+        SDL_GL_UnloadLibrary();
+        if (SDL_GL_LoadLibrary(NULL) < 0) {
+            return -1;
+        }
+        loaded_opengl = SDL_TRUE;
     }
 
     if ((window->flags & SDL_WINDOW_VULKAN) != (flags & SDL_WINDOW_VULKAN)) {