InputMergeField is not placed at the cursor position in this release. This bug is easily reproduced using the TextObjects demo as follows:
Type a new line with the word 'Hello'. Place the cursor at the end of the land and press the 'Insert Merge Field' button. The merge field will be inserted between the l and o NOT at the end of the line - eg:
hell<<Julian>>o
I am sure this will be fixed with your usual speed