No, the shift in loading makes perfect sense and is one reason I regularly include standing breaks in all of my training (inside and out). I do it in work or recovery intervals, with general intent towards when and where I would do them outside, to make some parallels in my training.
I think using them for bailouts may be OK, to a degree. Make sure to recognize what is happening to you to lead to that, especially if it’s in those final moment of an interval. Consider if adding standing at more deliberate points in the sets (work or recovery) would serve you better so you can nail the work sets as you want to ride them.
Think about the weakness that is setting you to the point of resorting to standing, and see if you can address it so you are proactive, not reactive.