Force debug window font

src/window_manager_private.cc

@@ -722,6 +722,12 @@ int _win_debug(char* string)
         return -1;
     }
 
+    // CE: Debug window metrics were designed for default DOS-style font (0).
+    // We don't expect caller to properly set one, so without manually forcing
+    // it debug window might contain mixed fonts.
+    int oldFont = fontGetCurrent();
+    fontSetCurrent(0);
+
     int lineHeight = fontGetLineHeight();
 
     if (_wd == -1) {
@@ -828,6 +834,9 @@ int _win_debug(char* string)
 
     windowRefresh(_wd);
 
+    // CE: Restore font.
+    fontSetCurrent(oldFont);
+
     return 0;
 }