I have given instructions to repeat, but more slowly, and people will still click through errors without a chance to read. I have asked people to go step by step and pause after every step so we can look at what's going on, and they will treat "do thing and close resulting error" as a single step, pausing only after having closed the error.
The only explanation I have that I can understand is that closing errors and popups is a reflex for many people, such that they don't even register doing it. I don't know if this is true or if people would agree with it.
I've seen this with programmers at all levels of seniority. I've seen it with technically capable non-programmers. I've seen it with non-technical people just trying to use some piece of software.
The only thing that's ever been effective for me is to coach people to copy all text and take screenshots of literally everything that is happening on their screen (too many narrow screenshots that obscure useful context, so I ask for whole-screen screenshots only). Some people do well with this. Some never seem to put any effort into the communication.