[bug] paper2d on sprite horizontal line

the top line of the sprite shows the horizontal line, in place of the alpha channel. This bug is only present if the Render Geometry Type → Source Bounding Box

bug: https://i.imgur.com/iPjF6Ws.jpg
https://i.imgur.com/pvmRX7n.png

UE 4.19 Compiling Version from Epic Games Launcher

Source Texture: TGA 32 bit Float https://i.imgur.com/1FjUF6y.png
[https://nofile.io/f/GChWneStj2w/grass_Krita3.tga][3]

Hello,

We’ve recently made a switch to a new bug reporting method using a more structured form. Please visit the link below for more details and report the issue using the new Bug Submission Form. Feel free to continue to use this thread for community discussion around the issue.

https://epicsupport.force.com/unrealengine/s/

Thanks