diff --git a/src/settings.cpp b/src/settings.cpp
index 2800093fe7..06e691a0a3 100644
--- a/src/settings.cpp
+++ b/src/settings.cpp
@@ -343,6 +343,12 @@ static const void *StringToVal(const SettingDescBase *desc, const char *orig_str
 	case SDT_NUMX: {
 		char *end;
 		size_t val = strtoul(str, &end, 0);
+		if (end == str) {
+			SetDParamStr(0, str);
+			SetDParamStr(1, desc->name);
+			ShowErrorMessage(STR_CONFIG_ERROR, STR_CONFIG_ERROR_INVALID_VALUE, WL_CRITICAL);
+			return desc->def;
+		}
 		if (*end != '\0') {
 			SetDParamStr(0, desc->name);
 			ShowErrorMessage(STR_CONFIG_ERROR, STR_CONFIG_ERROR_TRAILING_CHARACTERS, WL_CRITICAL);
@@ -359,7 +365,7 @@ static const void *StringToVal(const SettingDescBase *desc, const char *orig_str
 		SetDParamStr(0, str);
 		SetDParamStr(1, desc->name);
 		ShowErrorMessage(STR_CONFIG_ERROR, STR_CONFIG_ERROR_INVALID_VALUE, WL_CRITICAL);
-		return 0;
+		return desc->def;
 	}
 	case SDT_MANYOFMANY: {
 		size_t r = LookupManyOfMany(desc->many, str);
@@ -367,7 +373,7 @@ static const void *StringToVal(const SettingDescBase *desc, const char *orig_str
 		SetDParamStr(0, str);
 		SetDParamStr(1, desc->name);
 		ShowErrorMessage(STR_CONFIG_ERROR, STR_CONFIG_ERROR_INVALID_VALUE, WL_CRITICAL);
-		return NULL;
+		return desc->def;
 	}
 	case SDT_BOOLX:
 		if (strcmp(str, "true")  == 0 || strcmp(str, "on")  == 0 || strcmp(str, "1") == 0) return (void*)true;
@@ -376,7 +382,7 @@ static const void *StringToVal(const SettingDescBase *desc, const char *orig_str
 		SetDParamStr(0, str);
 		SetDParamStr(1, desc->name);
 		ShowErrorMessage(STR_CONFIG_ERROR, STR_CONFIG_ERROR_INVALID_VALUE, WL_CRITICAL);
-		break;
+		return desc->def;
 
 	case SDT_STRING: return orig_str;
 	case SDT_INTLIST: return str;
@@ -2137,7 +2143,7 @@ static void Load_PATS()
 {
 	/* Copy over default setting since some might not get loaded in
 	 * a networking environment. This ensures for example that the local
-	 * signal_side stays when joining a network-server */
+	 * currency setting stays when joining a network-server */
 	LoadSettings(_settings, &_settings_game);
 }
 
diff --git a/src/table/settings.ini b/src/table/settings.ini
index aec498f820..168aa1e57e 100644
--- a/src/table/settings.ini
+++ b/src/table/settings.ini
@@ -456,7 +456,6 @@ to       = 158
 [SDT_BOOL]
 base     = GameSettings
 var      = construction.signal_side
-flags    = SLF_NO_NETWORK_SYNC
 guiflags = SGF_NO_NETWORK
 def      = true
 str      = STR_CONFIG_SETTING_SIGNALSIDE
diff --git a/src/video/win32_v.cpp b/src/video/win32_v.cpp
index 270af12e81..df7510084d 100644
--- a/src/video/win32_v.cpp
+++ b/src/video/win32_v.cpp
@@ -296,6 +296,9 @@ bool VideoDriver_Win32::MakeWindow(bool full_screen)
 	} else if (_wnd.fullscreen) {
 		/* restore display? */
 		ChangeDisplaySettings(NULL, 0);
+		/* restore the resolution */
+		_wnd.width = _bck_resolution.width;
+		_wnd.height = _bck_resolution.height;
 	}
 #endif
 
@@ -319,15 +322,13 @@ bool VideoDriver_Win32::MakeWindow(bool full_screen)
 #if !defined(WINCE)
 		AdjustWindowRect(&r, style, FALSE);
 #endif
-		w = r.right - r.left;
-		h = r.bottom - r.top;
-		x = (GetSystemMetrics(SM_CXSCREEN) - w) / 2;
-		y = (GetSystemMetrics(SM_CYSCREEN) - h) / 2;
 
-		if (_wnd.main_wnd) {
-			ShowWindow(_wnd.main_wnd, SW_SHOWNORMAL); // remove maximize-flag
-			SetWindowPos(_wnd.main_wnd, 0, x, y, w, h, SWP_NOACTIVATE | SWP_NOOWNERZORDER | SWP_NOZORDER);
-		} else {
+		if (_wnd.main_wnd == NULL) {
+			w = r.right - r.left;
+			h = r.bottom - r.top;
+			x = (GetSystemMetrics(SM_CXSCREEN) - w) / 2;
+			y = (GetSystemMetrics(SM_CYSCREEN) - h) / 2;
+
 			TCHAR Windowtitle[50];
 
 			_sntprintf(Windowtitle, lengthof(Windowtitle), _T("OpenTTD %s"), MB_TO_WIDE(_openttd_revision));
@@ -630,7 +631,7 @@ static LRESULT CALLBACK WndProcGdi(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lP
 				/* Set maximized flag when we maximize (obviously), but also when we
 				 * switched to fullscreen from a maximized state */
 				_window_maximize = (wParam == SIZE_MAXIMIZED || (_window_maximize && _fullscreen));
-				if (_window_maximize) _bck_resolution = _cur_resolution;
+				if (_window_maximize || _fullscreen) _bck_resolution = _cur_resolution;
 				ClientSizeChanged(LOWORD(lParam), HIWORD(lParam));
 			}
 			return 0;