My browser / operating system: Windows NT 10.0, Chrome 70.0.3538.102, No Flash version detected
gif at: https://ibb.co/wYDMVnj
my project: https://scratch.mit.edu/projects/355248422

dragging a block up/side to side leaves a black trail
trail disappears when i let go of blocks
going down erases
only with some blocks

raisinr wrote:

My browser / operating system: Windows NT 10.0, Chrome 70.0.3538.102, No Flash version detected
gif at: https://ibb.co/wYDMVnj
my project: https://scratch.mit.edu/projects/355248422

dragging a block up/side to side leaves a black trail
trail disappears when i let go of blocks
going down erases
only with some blocks

Probably just some lag, as long as it does not affect performance..well..it is not harmful

Long fixed