diff --git a/src/com/android/settings/security/InstallCaCertificateWarning.java b/src/com/android/settings/security/InstallCaCertificateWarning.java
index 3854875..139bc1c 100644
--- a/src/com/android/settings/security/InstallCaCertificateWarning.java
+++ b/src/com/android/settings/security/InstallCaCertificateWarning.java
@@ -16,6 +16,8 @@
 
 package com.android.settings.security;
 
+import static android.view.WindowManager.LayoutParams.SYSTEM_FLAG_HIDE_NON_SYSTEM_OVERLAY_WINDOWS;
+
 import android.annotation.Nullable;
 import android.app.Activity;
 import android.content.Intent;
@@ -45,6 +47,8 @@
         setTheme(SetupWizardUtils.getTheme(this, getIntent()));
         ThemeHelper.trySetDynamicColor(this);
         setContentView(R.layout.ca_certificate_warning_dialog);
+        getWindow().addSystemFlags(SYSTEM_FLAG_HIDE_NON_SYSTEM_OVERLAY_WINDOWS);
+
         final GlifLayout layout = findViewById(R.id.setup_wizard_layout);
         layout.setHeaderText(R.string.ca_certificate_warning_title);
 
@@ -57,6 +61,7 @@
                         .setTheme(R.style.SudGlifButton_Secondary)
                         .build()
         );
+        mixin.getSecondaryButtonView().setFilterTouchesWhenObscured(true);
 
         mixin.setPrimaryButton(
                 new FooterButton.Builder(this)
@@ -66,6 +71,7 @@
                         .setTheme(R.style.SudGlifButton_Primary)
                         .build()
         );
+        mixin.getPrimaryButtonView().setFilterTouchesWhenObscured(true);
     }
 
     private View.OnClickListener installCaCertificate() {