I created a simple animation with shape keys. However exporting this animation not working properly. After I export it in gltf2 or fbx format, the shape keys are reset to 0 in exported file. What causes that? Probably this is a bug, but I wonder if there is a working workaround.
This is the animation I created:
Update: Using emackey's advice I switch my shapekeys to "relative". But also I had to change each shapekey's "relative to"'s to one previous shape key. Even though shapekeys and keyframes exported correctly, this time their relative to's exported wrong. All of the shapekey's "relative to"s set as basis.