Line text properties cannot be edited until the text is created

1. Add a line to some note.
2. Right click and properties.
3. Tick the "Text" radio button and write some text in the textbox right to it (e.g. cresc.).
4. Click on "text properties". Nothing happens.

You have to click Accept, then right-click->properties again to be able to change the text properties.
I use this feature a lot to create crescendo lines.