Why is Swiper Slider not initialized if parent block is in display:none state?

Question

PHP

How to initialize sliderwhich is the default display: none?
There are three sliders and 2 of them are hidden, initialization takes place at one moment, but because 2 sliders display: none, then only one works
As a result, when we switch the block selection in the panel and do another display:flex, then they are not initialized.
If you set the default sliders display: flex, then they are all 3 initialized

Answer 1

You have a reserved word for SQL as the name for the column (show).

Answer 2

because when display: nonethe block (and, accordingly, all its contents) is, as it were, not in the DOM?