Software changes
I use InDesign daily for my publication and when you keep changing things, it throws me off and wastes my time.
I used to be able to print to save pages to the same folder, but now when I print to save a page, it takes me to whatever folder I most recently placed an image from. VERY frustrating. Also, I now have to scroll to get to my most recently used fonts rather than the drop down font list being automatically positioned at the top with most recently used fonts.
I wish you would just STOP changing things! Every time there's an update, it takes me a several days to adjust to changes that I didn't need or want, which slows me down and reduces my productivity.
If you MUST do updates, make them optional, or allow us to download them quarterly or twice a year so we don't have to constantly adapt to changes!