Hi, Yang I know Android default design has enabled paranormal for multiple windows. But the wallpaper's height does not fit display resolution. You can try to set different resolution image and check the display area of wallpaper. Compare to the original image, the lower part of wallpaper has been cut out.

ex: 1024x600, 1024x768, 1280x720, 1280x1024, 2160x1920 please used my photo <https://drive.google.com/file/d/1JcMe4wHGVlDqHx_hnyzmjX6w3ceiLQnB/view?us... And reference my video1 <https://drive.google.com/file/d/14hu1B8qctTihNes5w6TG4iEKouaXPE-S/view?us... video2 <https://drive.google.com/file/d/12VVWS1Yr2x6Fl3j0RlN6eH6JFrU0Afbg/view?us... ------------------------------------------------------------------------ *寄件者:* Yang, Dong <dong.yang(a)intel.com&gt; *寄件日期:* 2019年9月19日 上午 07:47 *收件者:* Zhang, Yanmin <yanmin.zhang(a)intel.com&gt;; MR. Children <simpleman(a)hotmail.com.tw&gt;; celadon(a)lists.01.org <celadon(a)lists.01.org&gt; *主旨:* RE: wallpaper can't match display resolution Hi MR Children, This is not an issue, I suppose this is Android’s configuration. As you know Android support multiple windows, if you create more windows and slide between windows you can see that your wallpaper will displayed as paranormal pictures, so it’s not supposed to only match the first window. Thanks, Dong *From:*Zhang, Yanmin *Sent:* Thursday, September 19, 2019 8:31 AM *To:* MR. Children <simpleman(a)hotmail.com.tw&gt;; celadon(a)lists.01.org *Cc:* Yang, Dong <dong.yang(a)intel.com&gt; *Subject:* RE: wallpaper can't match display resolution Sorry for replying late. We are very busy in other issues. We will prioritize this one. *From:*MR. Children [mailto:simpleman@hotmail.com.tw] *Sent:* Wednesday, September 18, 2019 10:31 PM *To:* Zhang, Yanmin <yanmin.zhang(a)intel.com <mailto:yanmin.zhang@intel.com>>; celadon(a)lists.01.org <mailto:celadon@lists.01.org> *Subject:* 回覆: wallpaper can't match display resolution Dear yanmin I find same problem in android 10 can you help me? thx System information Device: NUC6CAYH Manifest: 05-Sept-2019 lunch: celadon_tablet-eng ------------------------------------------------------------------------ *寄件者**:*MR. Children <simpleman(a)hotmail.com.tw <mailto:simpleman@hotmail.com.tw>> *寄件日期**:*2019年9月5日上午06:26 *收件者**:*Zhang, Yanmin <yanmin.zhang(a)intel.com <mailto:yanmin.zhang@intel.com>>; celadon(a)lists.01.org <mailto:celadon@lists.01.org> <celadon(a)lists.01.org <mailto:celadon@lists.01.org>> *主旨**:*回覆: wallpaper can't match display resolution Dear yanmin i usedany picture always can reproducethis issue you can download this picture <https://static1.squarespace.com/static/552b1764e4b03cff36ace4b2/t/5c6612d... to usb storage and select this picture ------------------------------------------------------------------------ *寄件者**:*Zhang, Yanmin <yanmin.zhang(a)intel.com <mailto:yanmin.zhang@intel.com>> *寄件日期**:*2019年9月5日上午05:37 *收件者**:*MR. Children <simpleman(a)hotmail.com.tw <mailto:simpleman@hotmail.com.tw>>; celadon(a)lists.01.org <mailto:celadon@lists.01.org> <celadon(a)lists.01.org <mailto:celadon@lists.01.org>> *主旨**:*RE: wallpaper can't match display resolution Where is the photo? *From:*Celadon [mailto:celadon-bounces@lists.01.org] *On Behalf Of *MR. Children *Sent:* Wednesday, September 04, 2019 10:19 PM *To:* celadon(a)lists.01.org <mailto:celadon@lists.01.org> *Subject:* [01.org Celadon] 回覆: wallpaper can't match display resolution ------------------------------------------------------------------------ *寄件者**:*MR. Children *寄件日期**:*2019年9月4日上午08:24 *收件者**:*celadon-info@01.org <mailto:celadon-info@01.org> <celadon-info(a)01.org <mailto:celadon-info@01.org>> *主旨**:*wallpaper can't match display resolution Dear all When I  using custom wallpaper this wallpaper can't match display resolution steps: step1:Setting->Display->Wallpaper->Wallpapers->My photos step2:Select photos step3:Set wallpaper step4:Select Home screen System information Device: NUC7i5DNHE Manifest: ww201925_KBLNUC lunch: celadon-eng I need help thx