TWTweetComposeViewController doesn’t display initial tweet

TWTweetComposeViewController doesn’t display tweets, that are too long. You can take a substring of a tweet by cutting down to 140 symbols:

[tweetView setInitialText:[self.textToExport substringToIndex:140]];
NSLog(@"tweetView.initialText:%@", [self.textToExport \
 substringToIndex:140]);