Long text creates margin at the bottom of the text

When you have a large amount of text inside the component you will eventually get some margin at the bottom of the text view. The longer you make the text the more margin will be there. The margin seems to get added in increments of the line height as you make the text longer.

If you take 30 paragraphs of [Lorem Ipsum](https://www.lipsum.com) you will see one extra line:

The red background is set on the `UITextView`.

If you add another 30 paragraphs you will get another extra empty line:

My guess is that it would have to do with some small error in the view height calculation that adds up over time as the size of the text grows. But I have not looked at the code much so I don't know exactly.

Reproduce the issue with 30 and then 60 Lorem Ipsum paragraphs, using the red UITextView background shown in the report. Trace the component's text and height calculation, then verify that increasing the text length no longer adds empty lines or bottom margin.

Written by the indexing model from the issue text.