Poor's man fix for this issue https://github.com/mattt/TTTAttributedLabel/issues/240

gistfile1.m

- (void)setTextAlignment:(NSTextAlignment)textAlignment {
    NSTextAlignment oldTextAlignment = self.textAlignment;
    [super setTextAlignment:textAlignment];

    if (textAlignment != oldTextAlignment) {

        // update link attributes
        if (self.linkAttributes) {
            NSMutableDictionary *mutableLinkAttributes = [self.linkAttributes mutableCopy];
            NSMutableDictionary *mutableActiveLinkAttributes = [self.activeLinkAttributes mutableCopy];
            if ([NSMutableParagraphStyle class]) {
                NSMutableParagraphStyle *paragraphStyle = [[mutableLinkAttributes objectForKey:(NSString *)kCTParagraphStyleAttributeName] mutableCopy];
                
                paragraphStyle.alignment = textAlignment;

                [mutableLinkAttributes setObject:paragraphStyle forKey:(NSString *)kCTParagraphStyleAttributeName];
                [mutableActiveLinkAttributes setObject:paragraphStyle forKey:(NSString *)kCTParagraphStyleAttributeName];
            } else {
                CTTextAlignment ctTextAlignment = CTTextAlignmentFromUITextAlignment(textAlignment);
                CTParagraphStyleSetting paragraphStyles[1] = {
                    {.spec = kCTParagraphStyleSpecifierAlignment, .valueSize = sizeof(CTTextAlignment), .value = (const void *)&ctTextAlignment}
                };
                CTParagraphStyleRef paragraphStyle = CTParagraphStyleCreate(paragraphStyles, 1);

                // am I overwriting old settings?
                [mutableLinkAttributes setObject:(__bridge id)paragraphStyle forKey:(NSString *)kCTParagraphStyleAttributeName];
                [mutableLinkAttributes setObject:(__bridge id)paragraphStyle forKey:(NSString *)kCTParagraphStyleAttributeName];

                CFRelease(paragraphStyle);
            }
            
            self.linkAttributes = [NSDictionary dictionaryWithDictionary:mutableLinkAttributes];
            self.activeLinkAttributes = [NSDictionary dictionaryWithDictionary:mutableActiveLinkAttributes];
        }

        [self setNeedsFramesetter];
        [self setNeedsDisplay];
    }
}