[Backdrop] Comment on z-index use case #18589
Merged
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It seems very strange to me that you would want the zIndex of the Backdrop to be -1. I would think the backdrop zIndex should be 1 so it overrides any normally positioned or fixed positioned element on the page. I am seeing strange issues with the default backdrop where some elements on the page (also MUI components, like Paper) are shown above it.
The -1 seems to be the culprit.
If you aren't going to change to 1, can someone explain why -1 is desirable?
Thanks.