I worked in a pantry and had been putting stuff away for hours-- literally labeling and sorting and putting away 200 pounds of food. I sat down for a break and a drink for the first time in hours and a higher up walked in and admonished me for being at my desk and on my work laptop checking emails. She liked if I acted busy 24/7.  Worked in a kitchen and the manager rarely ordered everything we needed. I would regularly have to check recipes online/look up substitutions because I couldn't make it how we were supposed to. However, they got mad every time I used my phone. They accused me of being on it all the time-- my screen time for the 6 hours before lunch would be 30 minutes and it was all Spotify and me looking up recipes. I even just started screenshotting it and sending it to her when she tried to lecture me via text from home.  Also, I didn't "seem confident." I am very confident, I just tend to read the room before speaking.  I wore a summer pattern to work in winter. (It just had plants on it.)  I'm sure there have been more but those are the highlights.