diff --git a/src/modules/libpref/init/StaticPrefList-yaml.patch b/src/modules/libpref/init/StaticPrefList-yaml.patch
index 6d3166133..fadcff2b1 100644
--- a/src/modules/libpref/init/StaticPrefList-yaml.patch
+++ b/src/modules/libpref/init/StaticPrefList-yaml.patch
@@ -1,8 +1,8 @@
 diff --git a/modules/libpref/init/StaticPrefList.yaml b/modules/libpref/init/StaticPrefList.yaml
-index 5c5992d7b32e4c16d6a92815ca6fd54e8fcec824..6c8e67e36f02b578c800fa460868135afb73c66b 100644
+index 7364514f74703184462e8dbce3f0aafc3f850a3d..560671beddf6c216e918a47bd5dbd4e770a24ec7 100644
 --- a/modules/libpref/init/StaticPrefList.yaml
 +++ b/modules/libpref/init/StaticPrefList.yaml
-@@ -17810,7 +17810,7 @@
+@@ -18067,7 +18067,7 @@
  # Whether we use the mica backdrop. Off by default for now.
  - name: widget.windows.mica
    type: bool
@@ -11,7 +11,7 @@ index 5c5992d7b32e4c16d6a92815ca6fd54e8fcec824..6c8e67e36f02b578c800fa460868135a
    mirror: once
  #endif
  
-@@ -17923,6 +17923,19 @@
+@@ -18180,6 +18180,26 @@
    mirror: always
  #endif
  
@@ -27,6 +27,13 @@ index 5c5992d7b32e4c16d6a92815ca6fd54e8fcec824..6c8e67e36f02b578c800fa460868135a
 +  value: false
 +  mirror: always
 +#endif
++
++#ifdef XP_WIN
++- name: zen.widget.windows.acrylic
++  type: bool
++  value: true
++  mirror: once
++#endif
 +
  #---------------------------------------------------------------------------
  # Prefs starting with "zoom."
diff --git a/src/widget/windows/nsWindow-cpp.patch b/src/widget/windows/nsWindow-cpp.patch
new file mode 100644
index 000000000..99fe82efa
--- /dev/null
+++ b/src/widget/windows/nsWindow-cpp.patch
@@ -0,0 +1,21 @@
+diff --git a/widget/windows/nsWindow.cpp b/widget/windows/nsWindow.cpp
+index b735e78b1c2f3e0d85a5224311cdc746007c7eac..50f3c6e40b11220b71a8a3811305661887bb4360 100644
+--- a/widget/windows/nsWindow.cpp
++++ b/widget/windows/nsWindow.cpp
+@@ -165,6 +165,7 @@
+ #include "mozilla/StaticPrefs_layout.h"
+ #include "mozilla/StaticPrefs_ui.h"
+ #include "mozilla/StaticPrefs_widget.h"
++#include "mozilla/StaticPrefs_zen.h"
+ #include "nsNativeAppSupportWin.h"
+ 
+ #include "nsIGfxInfo.h"
+@@ -1071,7 +1072,7 @@ nsresult nsWindow::Create(nsIWidget* aParent, const LayoutDeviceIntRect& aRect,
+ 
+   if (WinUtils::MicaEnabled() && !IsPopup()) {
+     // Enable Mica Alt Material if available.
+-    const DWM_SYSTEMBACKDROP_TYPE tabbedWindow = DWMSBT_TABBEDWINDOW;
++    const DWM_SYSTEMBACKDROP_TYPE tabbedWindow = StaticPrefs::zen_widget_windows_acrylic_AtStartup() ? DWMSBT_TRANSIENTWINDOW : DWMSBT_TABBEDWINDOW;
+     DwmSetWindowAttribute(mWnd, DWMWA_SYSTEMBACKDROP_TYPE, &tabbedWindow,
+                           sizeof tabbedWindow);
+   }