I drove a rental Tesla recently. We were parked in a long line waiting to board a ferry and I was playing chess on the main console. When the line started to move, I tried to too and car just wouldn't go or start. People stuck behind me started getting impatient and honking while I was trying to figure out what had happened, turning off and on again, pressing random buttons, accidentally popping the trunk, etc. It took several minutes to realize that the car wouldn't start while you were playing a game on the console, so I had to quit the game, and then drive.
My point with this anecdote is that it seems to me that Tesla has many such features, some of which may change with software updates, and, given the expansive definition of "reliability" used here, perhaps this is a driver of issues.
I wonder what the rates would be if you restricted it to "issues requiring professional repair" or something like that.