When I started this job 4 months ago, I was given a grace period of a week to "get into the groove of the code". I asked the lead dev where on pulse (intranet) the documentation was, he laughed and then resumed what he was doing. I shrugged it off and continued scrolling through the code.
A week later, working on a story, I'm stuck at why a particular function exists. I say "it would be nice if there was documentation, where is that anyway?". Lead dev replies, "one thing you should know about this company, there is no documentation unless it's API related".
Last month's retro, 80% of our (mine and lead dev) problems were related to a lack of kt, I laughed.