In combat, if you try summoning robot sidekick it'll instantly blow up, usually twice and stays on the third attempt. Clipping out of robot summon sometimes works, but is still a pain.
Im guessing your hitting the button 2x It always summons an blows up when you do thsi and in combat its hard to know that you even did it
i'm just tapping it once. i even just tried a macro to only tap it once, over a range of ms delay held, and it still explodes in combat.
My experience is the same as Qwantum's. If I accidentally double tap, it'll blow up in and out of combat. I have no problem summoning it in combat by pressing it once. I'm on PS4.