If you create/have a text box.

First line center justified.

Second and subsequent lines left justified.

Now delete only the text on the first line

If you remove the CR (backspace) to bring the second line to be the top line, it is now impossible to left justify the 1st line.

I have attached a test project with only one text oject on the home page, in it are 3 lines, please attempt to left justify the first line.

The only way I have been able to overcome this anomally is to delete the text object and recreate it, as you will see, it even survives an export to iwzip.

Enjoy. . .