Hello,
Indeed it does not seem like a bug but rather an intentional choice… But this choice is really unfortunate!
Juste to make it clear, here is the problem I have (really similar to the original question): when setting a direction in car route mode, there is a button « add stop » that works just fine. When switching to other modes though (bike mode in my case), the button disappears. And trying to add stops in car mode, then switching to bike mode just removes the added stop.
It is like in bike mode, stops are still a list (you can swap the departure and the end point), but unlike in car mode, the list is constrained to have only two elements.
So, I am trying not to let my frustration speak but it is a bit complicated since tjwolf reported a true issue that should just be fixed (from a consumer point of view there is no good reason that this « add stop » button disappears when switching mode) and you’re answering « no no, everything is fine »
By the way, the solution you mentioned, in addition to being not straightforward, does not work for me or I don’t understand it.
Thanks for reading.