Issue displaying custom block

[LADR]

Hi,

I'm trying to create a custom block which inherit from "upcoming events" with the same template except for one thing, the title (but I also have the issue when the template is the exact same thing).

The issue is the block is "transparent" or not "ending" : 

I tried to not edit the template at all like you'll see on the config below, but still have the issue

Here's the very basic config : 

[Marc]

What is the name of the block on your site please?

[LADR]

test 

[Jim M]

I don't read the language in question there but are you able to select and find the block in the custom block there? Is it perhaps, you do not have any content which matches the filters on the block?

[LADR]

Hi @Jim M
Yes I found the block and there is content as you can see :

 

And I discovered that if I put the block on the two column layout, it dont have the issue, like this :