Animated Cube is shown wrong in glTF viewers

the animated cube has two keyframes for rotation of the small box.
First keyframe has quat {0,0,0,-1} wich has an argument of 180 degrees
Second keyfram has quat {1,0,0,+} (a very small w) wich has an argument of 90 degrees (180 degrees rotation around [1,0,0] )

All slerps between quat 1 and quat 2 will have arguments from 180 down to 90 around x axis wich is a backward rotation around the x axis. All viewers I have found shows a clockwise rotation around x axis and that I dont understand

No file or test is named. Start by inspecting the animated cube asset's two rotation keyframes and the glTF viewer behavior described in the issue; determine the intended rotation from the quaternion values, then verify the result in the affected viewers.

Written by the indexing model from the issue text.