Note text cleared.

When I select a note and press escape key to begin editing, the cursor goes to the end of the notes existing text (which is highlighted) and the moment I type, all the text is cleared and the note is blanked. Is this meant to happen? If I click an arrow key to get rid of the highlighting then the note is not cleared and can be edited normally, but this is an extra key press required and is a pain if you forget.

This is fairly standard Windows behaviour when keying into a text field. You can however double-click into the note rather than using the keyboard and have the insertion point placed wherever you clicked, rather than pre-selecting the text.