If you ask Jazz, he will tell you that he is not disregards Ratchet orders.
Ratchet made him promise that he will 'rest', he never specified in which berth. And, after they told him what happened to his little brother, the only way he can rest is lying with said little brother, after he will check on him.
From the quick glimpse to the maps, and from Sam's information, Jazz is standing now in front of Optimus Prime room. Lil Bee should be inside. Optimus should be there as well, and Jazz prays that Ratchet didn't tell to Prime that Jazz is suppose to be in the medbay. He also hope the docbot gave a call to the bossbot, and that Prime will recognize him. I mean, Prime don't kill humans, usually, but if he feels like Jazz is a threat to his son, he will vaporize Jazz, and he's just back from the Well, thank you very much.
He vents (or breaths, or whatever this body required), and cracks the door open and slides inside as silent as he can.
That means with no sound, thank you, he is a spy, you know?
And after he is just speechless.
The scene in front of him is not what he was expecting.
Well, ok he was expecting the light to be on, for any emergency, and that is ok.
He was expecting the room to be tidy and free of everything could be dangerous for a little broken Bee, and the bossbot didn't disappoint him.
And he was expecting Optimus to be in recharge, and he can confirm that that is how Prime is.
What he wasn't expecting is the young boy, pale and sad and tired, sitting by Optimus' head, caressing his faceplate, humming an old cybertronian lullaby.
"Bee?"
"Shh, he wasn't able to sleep for long time, and he cannot keep working with humans and fight against Decepticons if he's so tired. He should take more care of himself, and not stay awake worrying for me"
Bee looks away for his father face, and tiredly smile to Jazz."Jazz, I know what you said there, but I failed, again…"
"Come here, little brother, let's talk in the other room, so that we will not wake Prime, ok?" Jazz's almost disturbed by the attitude of his little brother. Bee looks like he's in trance, barely there. He doesn't seem surprised or relieved that Jazz is awake, and that rings alarm bells in all his processor (oh, well, brain, whatever).
The berth where Prime is lying is quite high for a human, but is connected to the ground by stairs. Jazz helps Bee on the last steps, and holds his hand as they go out of the room.
Bee lead him in the cafeteria, and he sits on ground, in a spot Jazz recognize as the one with the best visual of all the room.
"I'm glad you are back, when I didn't see you after they'd freed us I assumed you were not going to come back. And then I realized I haven't thanked you back in the lab, when you help me, and…"
Bee's cheek are strained by tears by now, and Jazz is not sure how to help, or even if he can help.
Before he can do anything, Bee restart to talk "… probably I didn't go completely nut because you were there, and that is ridiculous because I know the truth…" "..the truth?" "that you are only in my mind… sigh… I'm here speaking with you as you are here, but I know that you are just an hallucination, because…because I lost it, didn't I?"
"Oh, Bee, no…" He tries to say, but Bumblebee sinks in his chest, holding his hoodie as a lifeline, and starts to sob and cry. "I'm sorry Jazz, I'm so, so sorry…. I failed to save you, and those student…And Cliffhanger, and all my team in Tyger Pax, I failed everyone and I should be dead, I should die, but I failed to kill myself as well…"
"Bee, hey Bee, look at me, no no look at me little brother" Jazz place his hands on the little boy's cheeks, lifting his face and forcing Bee to establish eyes contact.
"Bee, you don't fail me, I'm real, you brought me back…"
All the other things Jazz want to say, they all get lost in the sound of the alarm that pierces the quiet.