I did understand your concern.
Did you understand my explanation?
Should I bother explaining anything at all, if my explanations lose to "but I want" every time?
Kostya, I understood your explanation. I just thought my initial description was not clear enough, as I started this thread from a different question.
E-communications miss important channels, and there are frequent misunderstandings, so, I prefer to err on the more explicit side (even if occasionally at the expense of someone's getting annoyed with my questions). Thank you for your patience, and please, accept my apology for that.
As for the specific problem of ergonomics, I think I've found some sort of solution for myself. I disabled that floating bar. (Thanks for keeping that option!) Although it removes the benefit of that bar (now I have an extra click all the time, not just sometimes), it keeps consistent where I always find "move to folder": it is always in the menu, and doesn't disappear from there.
PS. And please, excuse me for one more followup thought:
For what it's worth, - most software solve the issue of toggling the state of multiple elements (that are in different states) with a single button: the first click makes them all uniform one way, and the second, - toggles all of them.
I am sure you are aware of this behavior. (The first of numerous examples that comes to my mind is font attribute formatting in MS Word, e.g. "Bold", "Italic")
I suspect that the native Android ways might not provide possibility to implement that. (I think I've seen it once or twice in Android, don't remember the app(s) now. But I suspect that may have been done "artificially".)
Either that or something else, - whatever the reason you chose to have constantly changing the floating bar, - I understand now that it's your conscious choice, and let's leave it at that.