The glitch on MacBook Pro, iMac, or Mac iOS, in general, is horrible. Taking notes by typing in the textbox on a PDF lecture on a Macbook or iMac is super lagging and annoying. I prefer typing over writing since it's quicker. However, it seems like I wasted more time adjusting, double-clicking the textbox. To make it worse, sometimes all the text disappeared after typing in the box, which is extremely annoying. This does not happen with my iPad though.