diff --git a/QMUIKit/QMUIComponents/ToastView/QMUIToastView.m b/QMUIKit/QMUIComponents/ToastView/QMUIToastView.m
index 58a3b3eb..8f1324b0 100644
--- a/QMUIKit/QMUIComponents/ToastView/QMUIToastView.m
+++ b/QMUIKit/QMUIComponents/ToastView/QMUIToastView.m
@@ -90,6 +90,13 @@ - (void)didMoveToSuperview {
         if (![kToastViews containsObject:self]) {
             [kToastViews addObject:self];
         }
+        /// https://github.com/Tencent/QMUI_iOS/issues/1186
+        self.translatesAutoresizingMaskIntoConstraints = NO;
+        NSLayoutConstraint *top = [NSLayoutConstraint constraintWithItem:self attribute:NSLayoutAttributeTop relatedBy:NSLayoutRelationEqual toItem:self.superview attribute:NSLayoutAttributeTop multiplier:1 constant:0];
+        NSLayoutConstraint *leading = [NSLayoutConstraint constraintWithItem:self attribute:NSLayoutAttributeLeading relatedBy:NSLayoutRelationEqual toItem:self.superview attribute:NSLayoutAttributeLeading multiplier:1 constant:0];
+        NSLayoutConstraint *bottom = [NSLayoutConstraint constraintWithItem:self attribute:NSLayoutAttributeBottom relatedBy:NSLayoutRelationEqual toItem:self.superview attribute:NSLayoutAttributeBottom multiplier:1 constant:0];
+        NSLayoutConstraint *trailing = [NSLayoutConstraint constraintWithItem:self attribute:NSLayoutAttributeTrailing relatedBy:NSLayoutRelationEqual toItem:self.superview attribute:NSLayoutAttributeTrailing multiplier:1 constant:0];
+        [self.superview addConstraints:@[top, leading, bottom, trailing]];
     } else {
         // hide
         if ([kToastViews containsObject:self]) {
@@ -143,7 +150,6 @@ - (void)setContentView:(UIView *)contentView {
 - (void)layoutSubviews {
     [super layoutSubviews];
     
-    self.frame = self.parentView.bounds;
     self.maskView.frame = self.bounds;
     
     CGFloat contentWidth = CGRectGetWidth(self.parentView.bounds);
@@ -328,7 +334,6 @@ + (BOOL)hideAllToastInView:(UIView *)view animated:(BOOL)animated {
     BOOL result = NO;
     for (QMUIToastView *toastView in toastViews) {
         result = YES;
-        toastView.removeFromSuperViewWhenHide = YES;
         [toastView hideAnimated:animated];
     }
     return result;
diff --git a/QMUIKit/QMUICore/QMUIHelper.m b/QMUIKit/QMUICore/QMUIHelper.m
index 24bed4f7..b6a7526f 100644
--- a/QMUIKit/QMUICore/QMUIHelper.m
+++ b/QMUIKit/QMUICore/QMUIHelper.m
@@ -24,6 +24,18 @@
 #import <math.h>
 #import <sys/utsname.h>
 
+@interface _QMUIFixIssue1263ViewController : UIViewController
+
+@end
+
+@implementation _QMUIFixIssue1263ViewController
+
+- (BOOL)shouldAutorotate {
+    return NO;
+}
+
+@end
+
 const CGPoint QMUIBadgeInvalidateOffset = {-1000, -1000};
 NSString *const kQMUIResourcesBundleName = @"QMUIResources";
 
@@ -482,7 +494,8 @@ + (BOOL)isNotchedScreen {
                     UIWindow *window = [[UIWindow alloc] initWithFrame:UIScreen.mainScreen.bounds];
                     peripheryInsets = window.safeAreaInsets;
                     if (peripheryInsets.bottom <= 0) {
-                        UIViewController *viewController = [UIViewController new];
+                        /// https://github.com/Tencent/QMUI_iOS/issues/1263
+                        _QMUIFixIssue1263ViewController *viewController = [_QMUIFixIssue1263ViewController new];
                         window.rootViewController = viewController;
                         if (CGRectGetMinY(viewController.view.frame) > 20) {
                             peripheryInsets.bottom = 1;
diff --git a/QMUIKit/UIKitExtensions/UISearchBar+QMUI.m b/QMUIKit/UIKitExtensions/UISearchBar+QMUI.m
index b6d386d3..391d2e69 100644
--- a/QMUIKit/UIKitExtensions/UISearchBar+QMUI.m
+++ b/QMUIKit/UIKitExtensions/UISearchBar+QMUI.m
@@ -80,8 +80,8 @@ + (void)load {
                 } else {
                     searchBar = (UISearchBar *)selfObject.superview.superview;
                 }
-                NSAssert(!searchBar || [searchBar isKindOfClass:UISearchBar.class], @"Can not find UISearchBar from cancelButton");
-                if (searchBar.qmui_alwaysEnableCancelButton && !searchBar.qmui_searchController) {
+                
+                if ([searchBar isKindOfClass:UISearchBar.class] && searchBar.qmui_alwaysEnableCancelButton && !searchBar.qmui_searchController) {
                     firstArgv = YES;
                 }