按钮的image图片是非圆角，直接对UIButton设置圆角，iOS13系统没有圆角的效果的问题。iOS9和iOS14都没有这个问题。

        self.layer.cornerRadius = cornerRadius;
        self.layer.masksToBounds = YES;

解决方案：直接对按钮imageView设置圆角，按钮背景设置为透明。

        self.imageView.layer.cornerRadius = cornerRadius;
        self.imageView.layer.masksToBounds = YES;

具体代码：

@interface BGCommonButton : UIButton

@property (nonatomic, assign) NSInteger sno;
@property (nonatomic, copy) void (^hitBlock)(NSInteger sno);


- (id)initWithTitle:(NSString *)title titleColor:(UIColor *)titleColor icon:(UIImage *)icon smallIcon:(UIImage *)smallIcon cornerRadius:(CGFloat)cornerRadius sno:(NSInteger)sno frame:(CGRect)frame;

@end

- (id)initWithTitle:(NSString *)title titleColor:(UIColor *)titleColor icon:(UIImage *)icon smallIcon:(UIImage *)smallIcon cornerRadius:(CGFloat)cornerRadius sno:(NSInteger)sno frame:(CGRect)frame
{
    self = [super initWithFrame:CGRectMake(0, 0, 12, 12)];
    
    if (self)
    {
        
//        self.isSelect = NO;
             
        self.icon = icon;
        self.smallIcon = smallIcon;
        self.titleColor = titleColor;
        self.title = title;
        self.cornerRadius = cornerRadius;
        self.sno = sno;
        self.frame = frame;
        [self setTitle:getNotNilString(@"") forState:UIControlStateNormal];
        if(self.smallIcon && title)
        {
            [self addSubview:self.decribeImageView];
            [self addSubview:self.describeTitleLabel];
            self.decribeImageView.frame = CGRectMake(COMMON_EDGE_DISTANCE, (self.frame.size.height - self.smallIcon.size.height - 13 -10)/2, self.smallIcon.size.width, self.smallIcon.size.height);
        }
        [self setImage:self.icon forState:UIControlStateNormal];
        [self setImage:self.icon forState:UIControlStateHighlighted];
        [self setImage:self.icon forState:UIControlStateSelected];
//        [self setTitleColor:titleColor forState:(UIControlStateNormal)];
        [self.imageView addCornerWithCornerRadius:cornerRadius];
        self.imageView.layer.cornerRadius = cornerRadius;
        self.imageView.layer.masksToBounds = YES;
        [self addTarget:self action:@selector(didSelectAction:) forControlEvents:UIControlEventTouchUpInside];
    }
//    if (self = [super init]) {
//        self = [[se alloc] init];
//
//    }
    return self;
}