Or use a modal/popup from shoelace.style. Opening a modal “made in softr” from a custom button wouldn’t be possible. At least I have 0 idea on how to do it.
That being said I advise not using custom buttons, specifically if they have to open a modal. As now this is something Softr can do, this would be a work overload.
It is not supposed to be related to buttons at all, it’s just the modal style. The modal coming out of a list with horizontal cards may be different, I have to check
There must be an error on your side, it perfectly works. Maybe your block needs an update or there is a little error in the code that you can’t see or I don’t know, but nothing to do on my side, I’m sure of this