If the last (or previous) block of assembled text ended with an indent, the next block of assembled text will start with that indent. If this is not what you want, just add a new 'blank' line and convert that final line back to a more 'normal' style. 'Un'- number, 'un'-bullet, 'un'-indent, 'un'-tab or otherwise undo the formatting.

   If after all that undoing, you still have something you don't like, use the 'Format Painter' to normalize things. Click 'Format Painter' in a 'normal' section of text to capture that 'good' formatting. The 'Format Painter' button will be toggled 'depressed' (i.e., 'on'). Move your mouse to over the last line of the document and left-click the mouse. That should apply the proper formatting.