I’ve been looking into the bendy bones feature lately when I began building a new armature for a model I downloaded, mainly for clothes animation. After posing it, I was impressed because if it works correctly when applied to the model, I could create a windy drafty effect easily.
The problem, however, is that the segmented bone between the head and tail seems to change when I toggle in and out of edit mode. I read the https://blenderartists.org/forum/showthread.php?413031-Editing-a-bendy-bone thread but it didn’t seem to be any good. I set the in/out x/y stuff in edit mode, and made sure the settings were 0 in pose mode, as per suggestion in that thread, but to no avail.
Below should illustrate my issue. Top is a screencap in edit mode, bottom is pose mode. If you look at the bendy bone to the right of the selected bone, you can see the problem is more obvious.