@smontreuil, does this happen when you set an explicit height on the slides themselves or does that constrain them?
I’m wondering if it is happening because you have set an explicit height on the Slider container, but the width of the Slides is dynamically set by the layout (default being 3 per view) and therefore the image dimensions may not fit within that layout if the aspect ratio doesn’t match the width of the slider divided by 3 and the height of the slider.
If you need an explicit height, you could make the images use object-fit cover and then allow them to dynamically scale to fit within the available width and height of the slider - that may solve it.
So, reviewing your screen recording, everything is growing (i.e. width is being pushed) as the slider is growing, including the paragraphs underneath the slider, which suggests it could be a problem with your post content styles not enforcing the width.
As a quick test I replicated all of the steps you did identically with the Slider and did not experience the problem, so I recommend firstly checking that you definitely set the max-width on all elements of the post content and not just the width (for example).
I have been working on this page a little more and have found that the slider only outgrows the page when the div that contains my post content block is set to column / center. If I turn off ‘center’ then the slider stops outgrowing the page.
Thank you for the suggestion @hopscotch , I typically use background images for scenarios like this so that the images will always appear consistent size-wise in relation to each other. If I understand correctly, placing an image block inside the div would allow for the possibility that each image could possibly display as a different size, no?
Turning of the ‘center’ formatting on the div fixed the issue.
I have problems almost every time I add a slider. It used to be the slider would grow infinitely when I set it to scroll vertically, so I avoided vertical sliders. Today I added a slider set to horizontal and it started growing uncontrollably too. It’s the only block that consistently gives me problems, so I think @Louis should take a closer look at it because it seems finicky.
Edit: One thing that seems to contribute to this is of you remove the gap value. If you explicitly set it to zero, it seems to help. I’ll have to experiment a little more, but that seemed to help for now.