ios15 UITableView Section Label font size and color was change

After upgrading ios14 to ios15, the font size and color of the label in the section of uitableview have changed.

click link view picture!

Is there any global solution.

My current method is like this, but I can only solve one tableview

- (void)tableView:(UITableView *)tableView willDisplayHeaderView:(UIView *)view forSection:(NSInteger)section {
    UITableViewHeaderFooterView *header = (UITableViewHeaderFooterView *)view;
    header.textLabel.textColor = [UIColor colorWithRed:0.137f green:0.137f blue:0.137f alpha:1.0];
    header.textLabel.font = [UIFont boldSystemFontOfSize:17]; 

   NSLog(@"title size is %f",header.textLabel.font.pointSize);

IOS14: title size is 17.000000
IOS15: title size is 15.000000

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