When experiencing bugs with the xfdesktop application, your way of helping things getting fixed is to report a bug about it in bugzilla. Note: For this you will need to have/create an account.

• [Bug 11266] [bug] Desktop icons order resets (2018/09/25 12:42)
• [Bug 14609] Crash with SEGV with tiled/MST monitor (2018/09/17 03:53)
• [Bug 13928] GLib-CRITICAL **: g_base64_encode_step: assertion 'in != NULL' failed (2018/09/16 23:24)
• [Bug 14644] Error in scaling down background images that are in portrait orientation (2018/08/31 12:10)
• [Bug 14121] Enable placing desktop icons on monitor of choice (2018/08/20 23:01)
• [Bug 14599] the applications menu on the desktop shows hidden applications (2018/08/20 03:39)
• [Bug 10592] [enh] [optional] Applications menu directly in right click menu, not in a sub-menu (2018/07/26 13:12)
• [Bug 13673] [enh] Recursive wallpaper folder option (2018/07/12 16:55)
• [Bug 13674] [enh] Next Wallpaper Option (2018/07/12 16:55)
• [Bug 13675] [enh] Open current wallpaper in image viewer (2018/07/12 16:55)
• [Bug 12179] [enh] add possibility to delete current wallpaper (2018/07/12 16:55)
• [Bug 13431] [bug] no desktop after startup, linux mint 17.1 xfce (2018/07/12 16:55)
• [Bug 10329] [enh] Multiple wallpaper directories (2018/07/12 16:40)
• [Bug 12377] window manager has no move to next monitor (2018/07/04 03:40)
• [Bug 14471] Double dialogues when dropping an URL from Firefox (2018/06/23 11:09)
• [Bug 14214] Spanish options do not start with capital letters (2018/05/25 04:41)
• [Bug 13325] Keyboard shortcuts Super-M and Super-D are not working (if configured in Window Manager to minimize all windows) (2018/05/16 12:16)
• [Bug 14366] XFCE 4.12 won't start properly after enabling Composition pipeline nvidia 390.48 (2018/05/01 00:05)
• [Bug 14360] portrait images incorrectly cropped when used as background (2018/04/27 00:03)
• [Bug 14313] When desktop wallpaper is set to randomize at an interval, manually selecting one doesn't reset the timer (2018/03/30 06:50)

If your bug/problem has not been reported before, report a new bug. Please ensure that you disclose any information that might be relevant for developers reading the bugreport, e.g. what distribution you're using, what package-version of xfdesktop or related Xfce libraries etc. To report a new bug, go here.