So, let's recapitulate.


- You start Emacs 27.0.50
- In your init file(s), you do not change the default value of w32-pass-lwindow-to-system
- While Emacs has the focus, if you press an lwindow combination, Emacs catches it and it is not passed back to Windows.
- So, from inside 27.0.50, you cannot do LWin+R o LWin+D, etc.
- But this didn't happen with Emacs 26.2.


> Am I right now?


   Yes, you are right. 



If  so, when you're inside Emacs 27.0.50, what does it say when you examine  the value of w32-pass-lwindow-to-system? For example, with  describe-variable.


Does still happen if you start Emacs with 


   emacs -Q


C:\emacs-27.0.50-snapshot-2019-09-18-x86_64\bin>emacs -Q



------------------ 原始邮件 ------------------
发件人:&nbsp;"Juanma Barranquero"<lekktu@gmail.com&gt;;
发送时间:&nbsp;2019年9月25日(星期三) 凌晨1:17
收件人:&nbsp;"Albert"<georgealbert@qq.com&gt;;
抄送:&nbsp;"Eli Zaretskii"<eliz@gnu.org&gt;;"37495"<37495@debbugs.gnu.org&gt;;
主题:&nbsp;Re: bug#37495: 27.0.50; lwindow doesn't pass to system




On Tue, Sep 24, 2019 at 6:59 PM Albert <georgealbert@qq.com&gt; wrote:

&gt; I'm sorry, the default value of w32-pass-lwindow-to-system is t. I dont' change w32-pass-lwindow-to-system in init file.


So, let's recapitulate.


- You start Emacs 27.0.50
- In your init file(s), you do not change the default value of w32-pass-lwindow-to-system
- While Emacs has the focus, if you press an lwindow combination, Emacs catches it and it is not passed back to Windows.
- So, from inside 27.0.50, you cannot do LWin+R o LWin+D, etc.
- But this didn't happen with Emacs 26.2.


Am I right now?


If so, when you're inside Emacs 27.0.50, what does it say when you examine the value of w32-pass-lwindow-to-system? For example, with describe-variable.


Does still happen if you start Emacs with&nbsp;


&nbsp; &nbsp;emacs -Q


?