What I posted earlier also means that the environment is incorrect and it can be done almost anywhere.
I will also post screenshots of this happening in attachments.
Wait, so this is confusing. Windows 10 Version Of Minecraft? or Java Edition Minecraft on a Windows 10 Laptop/PC
I found this yesterday as I was doing a nether survival and got a strider. When I brought the strider up a lava stream and onto a flat area of netherrack it still moved fine but when I moved off of the netherrack and tried to make it step down into the lava, it continued in the air and did not move down. I then proceeded to press shift and kill myself :|
In my testing, this does not occur in either a flat world or in creative.
Please tell me if you want me to post screenshots or not.
This is a bit later and for some reason it doesnt happen even in the nether.
Someone else please test if this happens in a flat world for you. Thanks!