diff -Naur SDL-1.2.15/src/video/x11/SDL_x11events.c SDL-1.2.15.patched/src/video/x11/SDL_x11events.c
--- SDL-1.2.15/src/video/x11/SDL_x11events.c	2025-05-03 05:04:34.839375088 -0400
+++ SDL-1.2.15.patched/src/video/x11/SDL_x11events.c	2025-05-03 17:27:15.334181528 -0400
@@ -385,6 +385,9 @@
 	return(posted);
 }
 
+static XEvent deferred_xevent;
+static int defer_xevent_until = 0;
+
 static int X11_DispatchEvent(_THIS)
 {
 	int posted;
@@ -411,6 +414,22 @@
 	}
 #endif
 
+	if(xevent.type == KeyRelease && xevent.xkey.keycode == 0x24) {
+		/* we just got a Return keyrelease */
+		if(!defer_xevent_until) {
+			/* a real one - defer it */
+			deferred_xevent = xevent;
+			defer_xevent_until = (SDL_GetTicks() + 30);
+			return 0;
+		} else if(SDL_GetTicks() < defer_xevent_until) {
+			/* a deferred event whose time has not yet come */
+			return 0;
+		} else {
+			/* process normally */
+			defer_xevent_until = 0;
+		}
+	}
+
 	posted = 0;
 	switch (xevent.type) {
 
@@ -936,6 +955,12 @@
 		X11_DispatchEvent(this);
 		++pending;
 	}
+
+	if(defer_xevent_until) {
+		pending--;
+		XPutBackEvent(SDL_Display, &deferred_xevent);
+	}
+
 	if ( switch_waiting ) {
 		Uint32 now;