2 files changed, 6 insertions, 0 deletions

diff --git a/src/ui/window.c b/src/ui/window.c
index 2062a3bb..2d65a655 100644
--- a/src/ui/window.c
+++ b/src/ui/window.c
@@ -729,6 +729,7 @@ void init_Window(iWindow *d, iRect rect) {
     d->lastNotifiedSize = zero_I2();
     d->pendingCursor = NULL;
     d->isDrawFrozen = iTrue;
+    d->isExposed = iFalse;
     d->isMouseInside = iTrue;
     d->focusGainedAt = 0;
     uint32_t flags = 0;
@@ -849,6 +850,10 @@ static void invalidate_Window_(iWindow *d) {
 static iBool handleWindowEvent_Window_(iWindow *d, const SDL_WindowEvent *ev) {
     switch (ev->event) {
         case SDL_WINDOWEVENT_EXPOSED:
+            if (!d->isExposed) {
+                drawBlank_Window_(d); /* avoid showing system-provided contents */
+                d->isExposed = iTrue;
+            }
             /* Since we are manually controlling when to redraw the window, we are responsible
                for ensuring that window contents get redrawn after expose events. Under certain
                circumstances (e.g., under openbox), not doing this would mean that the window
diff --git a/src/ui/window.h b/src/ui/window.h
index 25d81e6f..5bde9065 100644
--- a/src/ui/window.h
+++ b/src/ui/window.h
@@ -38,6 +38,7 @@ struct Impl_Window {
     iRect         lastRect; /* updated when window is moved/resized */
     iInt2         lastNotifiedSize; /* keep track of horizontal/vertical notifications */
     iBool         isDrawFrozen; /* avoids premature draws while restoring window state */
+    iBool         isExposed;
     iBool         isMouseInside;
     uint32_t      focusGainedAt;
     SDL_Renderer *render;