Thank you for the in-depth response, I will also post this in the mech jeb forum. Do you know the proper page to post?
A commonality is if I use mech jeb at all for landing, it will do this. (It hasn’t always done this though as other designs have landed fine).
I have an action group to replicate the 3 engine burn and the single engine burn, however what’s funny is there has been times where the rocket will crash, and If the engines survive, they will actually start to burn at full throttle!
One thing to note, is you can still see the contrail of the engines, because one thing to note is they come on for a second and then shut down.
I’ll post an image in a later post, as I can’t post an image while using the mobile site. (I think)