The anim curve of version 5.3 is completely broken, and so far the anim curve is still not working properly.The value of anim curve in the animation blueprint is always 0, no matter whether anim curve is set or not in the animation sequence.
and I found the function “get all curve names” return a empty array.
The animation effect based on this is completely invalid.
Finally I solved this “bug”. It’s because the function of the “curve source” animation blueprint node has been modified or fixed by EPIC, which in turn caused the “bug” in my project.