Container + Shape with transparent background color shows thin line between container and shape of the other container

Versions:
GeneratePress 3.1.0-alpha.2
GeneratePress Premium 2.1.0-alpha.3
GenerateBlocks 1.4.0-alpha.2
GenerateBlock Pro 1.1.0-alpha.2

Issue screenshot:

While using a vector background image on body element behind all containers I give every second container a halft-transparent background color. That ist workings. Using shapes on the bottom of the first container with the transparent background color of the next container shows a 1 px line of the non transparent background color between the containers. You see it in the screenshot.

Haven’t found a solution so far. Thanks for your support.

Greetings
Claus

I found the following in the css definition of the shape:

And after correcting the bottom tag manually: