this happens way too often in our company

PM: did you made that change I requested?
me: yeah, its on the live server now, why?
PM: I cant see it...
me: *wtf, I specially forced the JS to reload to eliminate problems with cache* could you send me a screenshot?
PM: *sends screenshot*
me: I dont get it... I can see the changes in my browser *dev feeling intensifies* ... refresh the site and try again
PM: oh... suddenly its there, ...anyway, thanks! it looks great!
me: *facepalm*

turns out our managers just dont refresh websites, they want changes to take place immediately