Related to this I think...
FYI elementor 3.7.0 confirmed bug. If you set a column > Layout > Widget Space to 0, it will not work but will default to use 20px. However if you use any other number it works fine, such as if you use 1 instead of 0. Elementor knows about it and has it on their radar but for anyone who like to use that setting to zero out vertical spacing between widgets sometimes, you should not update to 3.7.0 yet if that matters to you, or go through and change them all to 1
Can see their temp hotfix to be default 20px or one and not allow zero and then we have to go and override that setting